157881601 has 8 divisors (see below), whose sum is σ = 170726400. Its totient is φ = 145432128.

The previous prime is 157881589. The next prime is 157881613. The reversal of 157881601 is 106188751.

It is an interprime number because it is at equal distance from previous prime (157881589) and next prime (157881613).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157881601 - 2⁷ = 157881473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157881301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98001 + ... + 99598.

It is an arithmetic number, because the mean of its divisors is an integer number (21340800).

Almost surely, 2^157881601 is an apocalyptic number.

It is an amenable number.

157881601 is a deficient number, since it is larger than the sum of its proper divisors (12844799).

157881601 is a wasteful number, since it uses less digits than its factorization.

157881601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197663.

The product of its (nonzero) digits is 13440, while the sum is 37.

The square root of 157881601 is about 12565.0945479929. The cubic root of 157881601 is about 540.4769460196.

The spelling of 157881601 in words is "one hundred fifty-seven million, eight hundred eighty-one thousand, six hundred one".