51125039 has 8 divisors (see below), whose sum is σ = 59229600. Its totient is φ = 43220736.

The previous prime is 51125027. The next prime is 51125051. The reversal of 51125039 is 93052115.

51125039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51125027) and next prime (51125051).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51125039 - 2⁴ = 51125023 is a prime.

It is a super-2 number, since 2×51125039² = 5227539225503042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51124999 and 51125017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51125339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49514 + ... + 50535.

It is an arithmetic number, because the mean of its divisors is an integer number (7403700).

Almost surely, 2^51125039 is an apocalyptic number.

51125039 is a deficient number, since it is larger than the sum of its proper divisors (8104561).

51125039 is a wasteful number, since it uses less digits than its factorization.

51125039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100129.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 51125039 is about 7150.1775502431. The cubic root of 51125039 is about 371.1458003962.

It can be divided in two parts, 511 and 25039, that multiplied together give a square (12794929 = 3577²).

The spelling of 51125039 in words is "fifty-one million, one hundred twenty-five thousand, thirty-nine".