252154381 has 4 divisors (see below), whose sum is σ = 254511072. Its totient is φ = 249797692.

The previous prime is 252154373. The next prime is 252154411. The reversal of 252154381 is 183451252.

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 252154381 - 2³ = 252154373 is a prime.

It is a super-2 number, since 2×252154381² = 127163663714986322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252154481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178185 + ... + 1178398.

It is an arithmetic number, because the mean of its divisors is an integer number (63627768).

Almost surely, 2^252154381 is an apocalyptic number.

It is an amenable number.

252154381 is a deficient number, since it is larger than the sum of its proper divisors (2356691).

252154381 is a wasteful number, since it uses less digits than its factorization.

252154381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356690.

The product of its digits is 9600, while the sum is 31.

The square root of 252154381 is about 15879.3696663312. The cubic root of 252154381 is about 631.7649183438.

The spelling of 252154381 in words is "two hundred fifty-two million, one hundred fifty-four thousand, three hundred eighty-one".