252440477 has 4 divisors (see below), whose sum is σ = 252654336. Its totient is φ = 252226620.

The previous prime is 252440459. The next prime is 252440483. The reversal of 252440477 is 774044252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252440477 - 2¹² = 252436381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252440777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105149 + ... + 107522.

It is an arithmetic number, because the mean of its divisors is an integer number (63163584).

Almost surely, 2^252440477 is an apocalyptic number.

It is an amenable number.

252440477 is a deficient number, since it is larger than the sum of its proper divisors (213859).

252440477 is a wasteful number, since it uses less digits than its factorization.

252440477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213858.

The product of its (nonzero) digits is 62720, while the sum is 35.

The square root of 252440477 is about 15888.3755305569. The cubic root of 252440477 is about 632.0037628962.

The spelling of 252440477 in words is "two hundred fifty-two million, four hundred forty thousand, four hundred seventy-seven".