157677403 has 4 divisors (see below), whose sum is σ = 169806448. Its totient is φ = 145548360.

The previous prime is 157677347. The next prime is 157677449. The reversal of 157677403 is 304776751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304776751 = 1367 ⋅222953.

It is a cyclic number.

It is not a de Polignac number, because 157677403 - 2²¹ = 155580251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157677493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6064503 + ... + 6064528.

It is an arithmetic number, because the mean of its divisors is an integer number (42451612).

Almost surely, 2^157677403 is an apocalyptic number.

157677403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

157677403 is a deficient number, since it is larger than the sum of its proper divisors (12129045).

157677403 is a wasteful number, since it uses less digits than its factorization.

157677403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12129044.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 157677403 is about 12556.9663135648. The cubic root of 157677403 is about 540.2438347825.

The spelling of 157677403 in words is "one hundred fifty-seven million, six hundred seventy-seven thousand, four hundred three".