156885461 has 4 divisors (see below), whose sum is σ = 163706592. Its totient is φ = 150064332.

The previous prime is 156885427. The next prime is 156885493. The reversal of 156885461 is 164588651.

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, and also an emirpimes, since its reverse is a distinct semiprime: 164588651 = 211 ⋅780041.

It is a cyclic number.

It is not a de Polignac number, because 156885461 - 2⁶ = 156885397 is a prime.

It is a super-2 number, since 2×156885461² = 49226095746365042, 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 (156885161) 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, 3410531 + ... + 3410576.

It is an arithmetic number, because the mean of its divisors is an integer number (40926648).

Almost surely, 2^156885461 is an apocalyptic number.

It is an amenable number.

156885461 is a deficient number, since it is larger than the sum of its proper divisors (6821131).

156885461 is an equidigital number, since it uses as much as digits as its factorization.

156885461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6821130.

The product of its digits is 230400, while the sum is 44.

The square root of 156885461 is about 12525.3926485360. The cubic root of 156885461 is about 539.3378498089.

The spelling of 156885461 in words is "one hundred fifty-six million, eight hundred eighty-five thousand, four hundred sixty-one".