51527655 has 12 divisors (see below), whose sum is σ = 89314680. Its totient is φ = 27481392.

The previous prime is 51527647. The next prime is 51527657. The reversal of 51527655 is 55672515.

It is a happy number.

It is not a de Polignac number, because 51527655 - 2³ = 51527647 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51527657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 572485 + ... + 572574.

It is an arithmetic number, because the mean of its divisors is an integer number (7442890).

Almost surely, 2^51527655 is an apocalyptic number.

51527655 is a deficient number, since it is larger than the sum of its proper divisors (37787025).

51527655 is a wasteful number, since it uses less digits than its factorization.

51527655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145070 (or 1145067 counting only the distinct ones).

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

The square root of 51527655 is about 7178.2766037539. The cubic root of 51527655 is about 372.1175270347.

The spelling of 51527655 in words is "fifty-one million, five hundred twenty-seven thousand, six hundred fifty-five".