157636441 has 2 divisors, whose sum is σ = 157636442. Its totient is φ = 157636440.

The previous prime is 157636429. The next prime is 157636459. The reversal of 157636441 is 144636751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146313216 + 11323225 = 12096^2 + 3365^2 .

It is a cyclic number.

It is not a de Polignac number, because 157636441 - 2⁷ = 157636313 is a prime.

It is a super-2 number, since 2×157636441² = 49698495062292962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 157636441.

It is not a weakly prime, because it can be changed into another prime (157636471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78818220 + 78818221.

It is an arithmetic number, because the mean of its divisors is an integer number (78818221).

Almost surely, 2^157636441 is an apocalyptic number.

It is an amenable number.

157636441 is a deficient number, since it is larger than the sum of its proper divisors (1).

157636441 is an equidigital number, since it uses as much as digits as its factorization.

157636441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 157636441 is about 12555.3351607992. The cubic root of 157636441 is about 540.1970485720.

The spelling of 157636441 in words is "one hundred fifty-seven million, six hundred thirty-six thousand, four hundred forty-one".