157622287 has 2 divisors, whose sum is σ = 157622288. Its totient is φ = 157622286.

The previous prime is 157622207. The next prime is 157622329. The reversal of 157622287 is 782226751.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157622287 is a prime.

It is a super-2 number, since 2×157622287² = 49689570718220738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157622207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78811143 + 78811144.

It is an arithmetic number, because the mean of its divisors is an integer number (78811144).

Almost surely, 2^157622287 is an apocalyptic number.

157622287 is a deficient number, since it is larger than the sum of its proper divisors (1).

157622287 is an equidigital number, since it uses as much as digits as its factorization.

157622287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 40.

The square root of 157622287 is about 12554.7714833843. The cubic root of 157622287 is about 540.1808801915.

The spelling of 157622287 in words is "one hundred fifty-seven million, six hundred twenty-two thousand, two hundred eighty-seven".