157671477 has 6 divisors (see below), whose sum is σ = 227747702. Its totient is φ = 105114312.

The previous prime is 157671461. The next prime is 157671491. The reversal of 157671477 is 774176751.

157671477 is a `hidden beast` number, since 1 + 576 + 7 + 1 + 4 + 77 = 666.

It can be written as a sum of positive squares in only one way, i.e., 157402116 + 269361 = 12546^2 + 519^2 .

It is not a de Polignac number, because 157671477 - 2⁴ = 157671461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157671457) 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 5 ways as a sum of consecutive naturals, for example, 8759518 + ... + 8759535.

Almost surely, 2^157671477 is an apocalyptic number.

It is an amenable number.

157671477 is a deficient number, since it is larger than the sum of its proper divisors (70076225).

157671477 is a wasteful number, since it uses less digits than its factorization.

157671477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17519059 (or 17519056 counting only the distinct ones).

The product of its digits is 288120, while the sum is 45.

The square root of 157671477 is about 12556.7303467105. The cubic root of 157671477 is about 540.2370666914.

The spelling of 157671477 in words is "one hundred fifty-seven million, six hundred seventy-one thousand, four hundred seventy-seven".