51755571 has 32 divisors (see below), whose sum is σ = 89779200. Its totient is φ = 28848960.

The previous prime is 51755551. The next prime is 51755573. The reversal of 51755571 is 17555715.

It is not a de Polignac number, because 51755571 - 2⁷ = 51755443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51755573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4410 + ... + 11088.

It is an arithmetic number, because the mean of its divisors is an integer number (2805600).

Almost surely, 2^51755571 is an apocalyptic number.

51755571 is a deficient number, since it is larger than the sum of its proper divisors (38023629).

51755571 is a wasteful number, since it uses less digits than its factorization.

51755571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736 (or 6730 counting only the distinct ones).

The product of its digits is 30625, while the sum is 36.

The square root of 51755571 is about 7194.1344858155. The cubic root of 51755571 is about 372.6653674720.

It can be divided in two parts, 51755 and 571, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 51755571 in words is "fifty-one million, seven hundred fifty-five thousand, five hundred seventy-one".