157447613 has 2 divisors, whose sum is σ = 157447614. Its totient is φ = 157447612.

The previous prime is 157447601. The next prime is 157447637. The reversal of 157447613 is 316744751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79619929 + 77827684 = 8923^2 + 8822^2 .

It is a cyclic number.

It is not a de Polignac number, because 157447613 - 2¹⁰ = 157446589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157447643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78723806 + 78723807.

It is an arithmetic number, because the mean of its divisors is an integer number (78723807).

Almost surely, 2^157447613 is an apocalyptic number.

It is an amenable number.

157447613 is a deficient number, since it is larger than the sum of its proper divisors (1).

157447613 is an equidigital number, since it uses as much as digits as its factorization.

157447613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 157447613 is about 12547.8130763890. The cubic root of 157447613 is about 539.9812670685.

The spelling of 157447613 in words is "one hundred fifty-seven million, four hundred forty-seven thousand, six hundred thirteen".