51113425 has 36 divisors (see below), whose sum is σ = 71064028. Its totient is φ = 36432000.

The previous prime is 51113417. The next prime is 51113431. The reversal of 51113425 is 52431115.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 17380561 + 33732864 = 4169^2 + 5808^2 .

It is not a de Polignac number, because 51113425 - 2³ = 51113417 is a prime.

It is a super-2 number, since 2×51113425² = 5225164430461250, 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 = 51113396 and 51113405.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 184387 + ... + 184663.

Almost surely, 2^51113425 is an apocalyptic number.

51113425 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51113425 is a deficient number, since it is larger than the sum of its proper divisors (19950603).

51113425 is a wasteful number, since it uses less digits than its factorization.

51113425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 354 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 51113425 is about 7149.3653564495. The cubic root of 51113425 is about 371.1176940524.

The spelling of 51113425 in words is "fifty-one million, one hundred thirteen thousand, four hundred twenty-five".