157881577 has 12 divisors (see below), whose sum is σ = 183980496. Its totient is φ = 135089640.

The previous prime is 157881571. The next prime is 157881589. The reversal of 157881577 is 775188751.

It is a de Polignac number, because none of the positive numbers 2^k-157881577 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 157881577.

It is not an unprimeable number, because it can be changed into a prime (157881571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29002 + ... + 34012.

It is an arithmetic number, because the mean of its divisors is an integer number (15331708).

Almost surely, 2^157881577 is an apocalyptic number.

It is an amenable number.

157881577 is a deficient number, since it is larger than the sum of its proper divisors (26098919).

157881577 is an equidigital number, since it uses as much as digits as its factorization.

157881577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5668 (or 5661 counting only the distinct ones).

The product of its digits is 548800, while the sum is 49.

The square root of 157881577 is about 12565.0935929662. The cubic root of 157881577 is about 540.4769186332.

The spelling of 157881577 in words is "one hundred fifty-seven million, eight hundred eighty-one thousand, five hundred seventy-seven".