157564797 has 8 divisors (see below), whose sum is σ = 226246944. Its totient is φ = 96962928.

The previous prime is 157564787. The next prime is 157564807. The reversal of 157564797 is 797465751.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (157564787) and next prime (157564807).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 157564797 - 2¹² = 157560701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157564787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2020023 + ... + 2020100.

It is an arithmetic number, because the mean of its divisors is an integer number (28280868).

Almost surely, 2^157564797 is an apocalyptic number.

It is an amenable number.

157564797 is a deficient number, since it is larger than the sum of its proper divisors (68682147).

157564797 is a wasteful number, since it uses less digits than its factorization.

157564797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040139.

The product of its digits is 1852200, while the sum is 51.

The square root of 157564797 is about 12552.4817068180. The cubic root of 157564797 is about 540.1151983311.

The spelling of 157564797 in words is "one hundred fifty-seven million, five hundred sixty-four thousand, seven hundred ninety-seven".