51677525 has 6 divisors (see below), whose sum is σ = 64080162. Its totient is φ = 41342000.

The previous prime is 51677519. The next prime is 51677537. The reversal of 51677525 is 52577615.

It can be written as a sum of positive squares in 3 ways, for example, as 13645636 + 38031889 = 3694^2 + 6167^2 .

It is not a de Polignac number, because 51677525 - 2¹² = 51673429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1033526 + ... + 1033575.

It is an arithmetic number, because the mean of its divisors is an integer number (10680027).

Almost surely, 2^51677525 is an apocalyptic number.

It is an amenable number.

51677525 is a deficient number, since it is larger than the sum of its proper divisors (12402637).

51677525 is a wasteful number, since it uses less digits than its factorization.

51677525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067111 (or 2067106 counting only the distinct ones).

The product of its digits is 73500, while the sum is 38.

The square root of 51677525 is about 7188.7081593288. The cubic root of 51677525 is about 372.4779501384.

The spelling of 51677525 in words is "fifty-one million, six hundred seventy-seven thousand, five hundred twenty-five".