152561131 has 4 divisors (see below), whose sum is σ = 152595072. Its totient is φ = 152527192.

The previous prime is 152561117. The next prime is 152561147. The reversal of 152561131 is 131165251.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152561131 is a prime.

It is a super-2 number, since 2×152561131² = 46549797383998322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152561096 and 152561105.

It is not an unprimeable number, because it can be changed into a prime (152561191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8971 + ... + 19636.

It is an arithmetic number, because the mean of its divisors is an integer number (38148768).

Almost surely, 2^152561131 is an apocalyptic number.

152561131 is a deficient number, since it is larger than the sum of its proper divisors (33941).

152561131 is an equidigital number, since it uses as much as digits as its factorization.

152561131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33940.

The product of its digits is 900, while the sum is 25.

The square root of 152561131 is about 12351.5639090765. The cubic root of 152561131 is about 534.3362438338.

The spelling of 152561131 in words is "one hundred fifty-two million, five hundred sixty-one thousand, one hundred thirty-one".