157772475 has 48 divisors (see below), whose sum is σ = 331248640. Its totient is φ = 72122400.

The previous prime is 157772399. The next prime is 157772497. The reversal of 157772475 is 574277751.

157772475 is a `hidden beast` number, since 1 + 577 + 7 + 2 + 4 + 75 = 666.

It is not a de Polignac number, because 157772475 - 2⁹ = 157771963 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 157772475.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11971 + ... + 21420.

Almost surely, 2^157772475 is an apocalyptic number.

157772475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

157772475 is an abundant number, since it is smaller than the sum of its proper divisors (173476165).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157772475 is a wasteful number, since it uses less digits than its factorization.

157772475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33417 (or 33406 counting only the distinct ones).

The product of its digits is 480200, while the sum is 45.

The square root of 157772475 is about 12560.7513708377. The cubic root of 157772475 is about 540.3523934417.

The spelling of 157772475 in words is "one hundred fifty-seven million, seven hundred seventy-two thousand, four hundred seventy-five".