157077505 has 8 divisors (see below), whose sum is σ = 202992552. Its totient is φ = 115995648.

The previous prime is 157077497. The next prime is 157077509. The reversal of 157077505 is 505770751.

It can be written as a sum of positive squares in 4 ways, for example, as 6843456 + 150234049 = 2616^2 + 12257^2 .

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 157077505 - 2³ = 157077497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157077509) 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, 1208224 + ... + 1208353.

It is an arithmetic number, because the mean of its divisors is an integer number (25374069).

Almost surely, 2^157077505 is an apocalyptic number.

It is an amenable number.

157077505 is a deficient number, since it is larger than the sum of its proper divisors (45915047).

157077505 is a wasteful number, since it uses less digits than its factorization.

157077505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416595.

The product of its (nonzero) digits is 42875, while the sum is 37.

The square root of 157077505 is about 12533.0564907368. The cubic root of 157077505 is about 539.5578284763.

The spelling of 157077505 in words is "one hundred fifty-seven million, seventy-seven thousand, five hundred five".