252213977 has 4 divisors (see below), whose sum is σ = 252249060. Its totient is φ = 252178896.

The previous prime is 252213947. The next prime is 252213991. The reversal of 252213977 is 779312252.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 210366016 + 41847961 = 14504^2 + 6469^2 .

It is a cyclic number.

It is not a de Polignac number, because 252213977 - 2¹⁴ = 252197593 is a prime.

It is a super-2 number, since 2×252213977² = 127223780388313058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252213977.

It is not an unprimeable number, because it can be changed into a prime (252213947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2402 + ... + 22587.

It is an arithmetic number, because the mean of its divisors is an integer number (63062265).

Almost surely, 2^252213977 is an apocalyptic number.

It is an amenable number.

252213977 is a deficient number, since it is larger than the sum of its proper divisors (35083).

252213977 is a wasteful number, since it uses less digits than its factorization.

252213977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35082.

The product of its digits is 52920, while the sum is 38.

The square root of 252213977 is about 15881.2460783151. The cubic root of 252213977 is about 631.8146863947.

The spelling of 252213977 in words is "two hundred fifty-two million, two hundred thirteen thousand, nine hundred seventy-seven".