51642607 has 4 divisors (see below), whose sum is σ = 51675976. Its totient is φ = 51609240.

The previous prime is 51642601. The next prime is 51642623. The reversal of 51642607 is 70624615.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51642607 - 2¹⁵ = 51609839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51642601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14244 + ... + 17497.

It is an arithmetic number, because the mean of its divisors is an integer number (12918994).

Almost surely, 2^51642607 is an apocalyptic number.

51642607 is a deficient number, since it is larger than the sum of its proper divisors (33369).

51642607 is a wasteful number, since it uses less digits than its factorization.

51642607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33368.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 51642607 is about 7186.2790789114. The cubic root of 51642607 is about 372.3940379958.

The spelling of 51642607 in words is "fifty-one million, six hundred forty-two thousand, six hundred seven".