252128977 has 8 divisors (see below), whose sum is σ = 254200320. Its totient is φ = 250065840.

The previous prime is 252128959. The next prime is 252128999. The reversal of 252128977 is 779821252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252128977 - 2¹⁵ = 252096209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252128927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69474 + ... + 73012.

It is an arithmetic number, because the mean of its divisors is an integer number (31775040).

Almost surely, 2^252128977 is an apocalyptic number.

It is an amenable number.

252128977 is a deficient number, since it is larger than the sum of its proper divisors (2071343).

252128977 is a wasteful number, since it uses less digits than its factorization.

252128977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103.

The product of its digits is 141120, while the sum is 43.

The square root of 252128977 is about 15878.5697403765. The cubic root of 252128977 is about 631.7437013220.

The spelling of 252128977 in words is "two hundred fifty-two million, one hundred twenty-eight thousand, nine hundred seventy-seven".