157977433 has 8 divisors (see below), whose sum is σ = 160001280. Its totient is φ = 155962800.

The previous prime is 157977389. The next prime is 157977439. The reversal of 157977433 is 334779751.

157977433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 157977433 - 2⁹ = 157976921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157977439) 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, 36216 + ... + 40342.

It is an arithmetic number, because the mean of its divisors is an integer number (20000160).

Almost surely, 2^157977433 is an apocalyptic number.

It is an amenable number.

157977433 is a deficient number, since it is larger than the sum of its proper divisors (2023847).

157977433 is a wasteful number, since it uses less digits than its factorization.

157977433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4607.

The product of its digits is 555660, while the sum is 46.

The square root of 157977433 is about 12568.9073908594. The cubic root of 157977433 is about 540.5862779710.

The spelling of 157977433 in words is "one hundred fifty-seven million, nine hundred seventy-seven thousand, four hundred thirty-three".