157284861 has 4 divisors (see below), whose sum is σ = 209713152. Its totient is φ = 104856572.

The previous prime is 157284797. The next prime is 157284863. The reversal of 157284861 is 168482751.

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 157284861 - 2⁶ = 157284797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157284863) 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, 26214141 + ... + 26214146.

It is an arithmetic number, because the mean of its divisors is an integer number (52428288).

Almost surely, 2^157284861 is an apocalyptic number.

It is an amenable number.

157284861 is a deficient number, since it is larger than the sum of its proper divisors (52428291).

157284861 is an equidigital number, since it uses as much as digits as its factorization.

157284861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52428290.

The product of its digits is 107520, while the sum is 42.

The square root of 157284861 is about 12541.3261260522. The cubic root of 157284861 is about 539.7951452041.

The spelling of 157284861 in words is "one hundred fifty-seven million, two hundred eighty-four thousand, eight hundred sixty-one".