157304881 has 4 divisors (see below), whose sum is σ = 162379264. Its totient is φ = 152230500.

The previous prime is 157304839. The next prime is 157304891. The reversal of 157304881 is 188403751.

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 157304881 - 2⁷ = 157304753 is a prime.

It is a super-2 number, since 2×157304881² = 49489651172848322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157304881.

It is not an unprimeable number, because it can be changed into a prime (157304821) 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, 2537145 + ... + 2537206.

It is an arithmetic number, because the mean of its divisors is an integer number (40594816).

Almost surely, 2^157304881 is an apocalyptic number.

It is an amenable number.

157304881 is a deficient number, since it is larger than the sum of its proper divisors (5074383).

157304881 is an equidigital number, since it uses as much as digits as its factorization.

157304881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5074382.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 157304881 is about 12542.1242618625. The cubic root of 157304881 is about 539.8180468367.

The spelling of 157304881 in words is "one hundred fifty-seven million, three hundred four thousand, eight hundred eighty-one".