157979453 has 8 divisors (see below), whose sum is σ = 168930360. Its totient is φ = 147212800.

The previous prime is 157979429. The next prime is 157979467. The reversal of 157979453 is 354979751.

It can be written as a sum of positive squares in 4 ways, for example, as 79798489 + 78180964 = 8933^2 + 8842^2 .

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 157979453 - 2⁶ = 157979389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157979413) 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, 44288 + ... + 47721.

It is an arithmetic number, because the mean of its divisors is an integer number (21116295).

Almost surely, 2^157979453 is an apocalyptic number.

It is an amenable number.

157979453 is a deficient number, since it is larger than the sum of its proper divisors (10950907).

157979453 is a wasteful number, since it uses less digits than its factorization.

157979453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92127.

The product of its digits is 1190700, while the sum is 50.

The square root of 157979453 is about 12568.9877476271. The cubic root of 157979453 is about 540.5885820546.

The spelling of 157979453 in words is "one hundred fifty-seven million, nine hundred seventy-nine thousand, four hundred fifty-three".