51860906 has 8 divisors (see below), whose sum is σ = 81173664. Its totient is φ = 24803020.

The previous prime is 51860869. The next prime is 51860909. The reversal of 51860906 is 60906815.

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

It is a super-2 number, since 2×51860906² = 5379107142281672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51860909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563660 + ... + 563751.

It is an arithmetic number, because the mean of its divisors is an integer number (10146708).

Almost surely, 2^51860906 is an apocalyptic number.

51860906 is a deficient number, since it is larger than the sum of its proper divisors (29312758).

51860906 is a wasteful number, since it uses less digits than its factorization.

51860906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127436.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 51860906 is about 7201.4516592143. The cubic root of 51860906 is about 372.9180172827.

The spelling of 51860906 in words is "fifty-one million, eight hundred sixty thousand, nine hundred six".