157021113 has 8 divisors (see below), whose sum is σ = 209462688. Its totient is φ = 104630144.

The previous prime is 157021099. The next prime is 157021141. The reversal of 157021113 is 311120751.

It is a happy number.

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 157021113 - 2⁴ = 157021097 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 157021113.

It is not an unprimeable number, because it can be changed into a prime (157021153) 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, 4695 + ... + 18332.

It is an arithmetic number, because the mean of its divisors is an integer number (26182836).

Almost surely, 2^157021113 is an apocalyptic number.

It is an amenable number.

157021113 is a deficient number, since it is larger than the sum of its proper divisors (52441575).

157021113 is a wasteful number, since it uses less digits than its factorization.

157021113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25303.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 157021113 is about 12530.8065582388. The cubic root of 157021113 is about 539.4932523150.

Adding to 157021113 its reverse (311120751), we get a palindrome (468141864).

The spelling of 157021113 in words is "one hundred fifty-seven million, twenty-one thousand, one hundred thirteen".