252421775 has 12 divisors (see below), whose sum is σ = 318910392. Its totient is φ = 198126240.

The previous prime is 252421769. The next prime is 252421787. The reversal of 252421775 is 577124252.

It is not a de Polignac number, because 252421775 - 2¹⁸ = 252159631 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93929 + ... + 96578.

It is an arithmetic number, because the mean of its divisors is an integer number (26575866).

Almost surely, 2^252421775 is an apocalyptic number.

252421775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

252421775 is a deficient number, since it is larger than the sum of its proper divisors (66488617).

252421775 is a wasteful number, since it uses less digits than its factorization.

252421775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190570 (or 190565 counting only the distinct ones).

The product of its digits is 39200, while the sum is 35.

The square root of 252421775 is about 15887.7869761651. The cubic root of 252421775 is about 631.9881552218.

The spelling of 252421775 in words is "two hundred fifty-two million, four hundred twenty-one thousand, seven hundred seventy-five".