157977603 has 12 divisors (see below), whose sum is σ = 260788528. Its totient is φ = 90272880.

The previous prime is 157977569. The next prime is 157977607. The reversal of 157977603 is 306779751.

157977603 is a `hidden beast` number, since 1 + 579 + 7 + 76 + 0 + 3 = 666.

It is not a de Polignac number, because 157977603 - 2⁶ = 157977539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157977607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1253728 + ... + 1253853.

Almost surely, 2^157977603 is an apocalyptic number.

157977603 is a deficient number, since it is larger than the sum of its proper divisors (102810925).

157977603 is a wasteful number, since it uses less digits than its factorization.

157977603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507594 (or 2507591 counting only the distinct ones).

The product of its (nonzero) digits is 277830, while the sum is 45.

The square root of 157977603 is about 12568.9141535775. The cubic root of 157977603 is about 540.5864718798.

The spelling of 157977603 in words is "one hundred fifty-seven million, nine hundred seventy-seven thousand, six hundred three".