51627555 has 96 divisors (see below), whose sum is σ = 112140288. Its totient is φ = 21427200.

The previous prime is 51627551. The next prime is 51627557. The reversal of 51627555 is 55572615.

It is a happy number.

It is not a de Polignac number, because 51627555 - 2² = 51627551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51627551) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 165850 + ... + 166160.

It is an arithmetic number, because the mean of its divisors is an integer number (1168128).

Almost surely, 2^51627555 is an apocalyptic number.

51627555 is an abundant number, since it is smaller than the sum of its proper divisors (60512733).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51627555 is a wasteful number, since it uses less digits than its factorization.

51627555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 374 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 51627555 is about 7185.2317290398. The cubic root of 51627555 is about 372.3578545673.

The spelling of 51627555 in words is "fifty-one million, six hundred twenty-seven thousand, five hundred fifty-five".