157397765 has 8 divisors (see below), whose sum is σ = 215859840. Its totient is φ = 107929872.

The previous prime is 157397701. The next prime is 157397803. The reversal of 157397765 is 567793751.

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 157397765 - 2⁶ = 157397701 is a prime.

It is a super-3 number, since 3×157397765³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2248505 + ... + 2248574.

It is an arithmetic number, because the mean of its divisors is an integer number (26982480).

Almost surely, 2^157397765 is an apocalyptic number.

It is an amenable number.

157397765 is a deficient number, since it is larger than the sum of its proper divisors (58462075).

157397765 is an equidigital number, since it uses as much as digits as its factorization.

157397765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4497091.

The product of its digits is 1389150, while the sum is 50.

The square root of 157397765 is about 12545.8265969206. The cubic root of 157397765 is about 539.9242749324.

The spelling of 157397765 in words is "one hundred fifty-seven million, three hundred ninety-seven thousand, seven hundred sixty-five".