252278501 has 4 divisors (see below), whose sum is σ = 254636352. Its totient is φ = 249920652.

The previous prime is 252278497. The next prime is 252278503. The reversal of 252278501 is 105872252.

It is a happy number.

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 252278501 - 2² = 252278497 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 (252278503) 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, 1178765 + ... + 1178978.

It is an arithmetic number, because the mean of its divisors is an integer number (63659088).

Almost surely, 2^252278501 is an apocalyptic number.

It is an amenable number.

252278501 is a deficient number, since it is larger than the sum of its proper divisors (2357851).

252278501 is a wasteful number, since it uses less digits than its factorization.

252278501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357850.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 252278501 is about 15883.2774010907. The cubic root of 252278501 is about 631.8685609332.

The spelling of 252278501 in words is "two hundred fifty-two million, two hundred seventy-eight thousand, five hundred one".