252771651 has 32 divisors (see below), whose sum is σ = 409847040. Its totient is φ = 152697600.

The previous prime is 252771643. The next prime is 252771661. The reversal of 252771651 is 156177252.

252771651 is a `hidden beast` number, since 2 + 527 + 71 + 65 + 1 = 666.

It is not a de Polignac number, because 252771651 - 2³ = 252771643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252771661) 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, 103636 + ... + 106046.

It is an arithmetic number, because the mean of its divisors is an integer number (12807720).

Almost surely, 2^252771651 is an apocalyptic number.

252771651 is a deficient number, since it is larger than the sum of its proper divisors (157075389).

252771651 is a wasteful number, since it uses less digits than its factorization.

252771651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784 (or 2778 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 252771651 is about 15898.7940108676. The cubic root of 252771651 is about 632.2800151514.

It can be divided in two parts, 252 and 771651, that added together give a triangular number (771903 = T₁₂₄₂).

The spelling of 252771651 in words is "two hundred fifty-two million, seven hundred seventy-one thousand, six hundred fifty-one".