157112621 has 2 divisors, whose sum is σ = 157112622. Its totient is φ = 157112620.

The previous prime is 157112591. The next prime is 157112629. The reversal of 157112621 is 126211751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128006596 + 29106025 = 11314^2 + 5395^2 .

It is a cyclic number.

It is not a de Polignac number, because 157112621 - 2²² = 152918317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157112629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78556310 + 78556311.

It is an arithmetic number, because the mean of its divisors is an integer number (78556311).

Almost surely, 2^157112621 is an apocalyptic number.

It is an amenable number.

157112621 is a deficient number, since it is larger than the sum of its proper divisors (1).

157112621 is an equidigital number, since it uses as much as digits as its factorization.

157112621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 26.

The square root of 157112621 is about 12534.4573476477. The cubic root of 157112621 is about 539.5980330470.

The spelling of 157112621 in words is "one hundred fifty-seven million, one hundred twelve thousand, six hundred twenty-one".