252777555 has 24 divisors (see below), whose sum is σ = 438525360. Its totient is φ = 134698560.

The previous prime is 252777527. The next prime is 252777589. The reversal of 252777555 is 555777252.

252777555 is a `hidden beast` number, since 2 + 5 + 27 + 77 + 555 = 666.

It is not a de Polignac number, because 252777555 - 2⁵ = 252777523 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 252777555.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85441 + ... + 88349.

It is an arithmetic number, because the mean of its divisors is an integer number (18271890).

Almost surely, 2^252777555 is an apocalyptic number.

252777555 is a deficient number, since it is larger than the sum of its proper divisors (185747805).

252777555 is a wasteful number, since it uses less digits than its factorization.

252777555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4851 (or 4848 counting only the distinct ones).

The product of its digits is 857500, while the sum is 45.

The square root of 252777555 is about 15898.9796842439. The cubic root of 252777555 is about 632.2849378450.

The spelling of 252777555 in words is "two hundred fifty-two million, seven hundred seventy-seven thousand, five hundred fifty-five".