152572381 has 4 divisors (see below), whose sum is σ = 164308732. Its totient is φ = 140836032.

The previous prime is 152572373. The next prime is 152572391. The reversal of 152572381 is 183275251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183275251 = 919 ⋅199429.

It can be written as a sum of positive squares in 2 ways, for example, as 32319225 + 120253156 = 5685^2 + 10966^2 .

It is a cyclic number.

It is not a de Polignac number, because 152572381 - 2³ = 152572373 is a prime.

It is a super-2 number, since 2×152572381² = 46556662888018322, 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 (152572351) 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, 5868156 + ... + 5868181.

It is an arithmetic number, because the mean of its divisors is an integer number (41077183).

Almost surely, 2^152572381 is an apocalyptic number.

It is an amenable number.

152572381 is a deficient number, since it is larger than the sum of its proper divisors (11736351).

152572381 is a wasteful number, since it uses less digits than its factorization.

152572381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11736350.

The product of its digits is 16800, while the sum is 34.

The square root of 152572381 is about 12352.0193085989. The cubic root of 152572381 is about 534.3493776618.

The spelling of 152572381 in words is "one hundred fifty-two million, five hundred seventy-two thousand, three hundred eighty-one".