51954557 has 8 divisors (see below), whose sum is σ = 52571136. Its totient is φ = 51341472.

The previous prime is 51954521. The next prime is 51954559. The reversal of 51954557 is 75545915.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51954557 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 (51954559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39098 + ... + 40404.

It is an arithmetic number, because the mean of its divisors is an integer number (6571392).

Almost surely, 2^51954557 is an apocalyptic number.

It is an amenable number.

51954557 is a deficient number, since it is larger than the sum of its proper divisors (616579).

51954557 is a wasteful number, since it uses less digits than its factorization.

51954557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747.

The product of its digits is 157500, while the sum is 41.

The square root of 51954557 is about 7207.9509571029. The cubic root of 51954557 is about 373.1423554651.

The spelling of 51954557 in words is "fifty-one million, nine hundred fifty-four thousand, five hundred fifty-seven".