157390487 has 2 divisors, whose sum is σ = 157390488. Its totient is φ = 157390486.

The previous prime is 157390483. The next prime is 157390507. The reversal of 157390487 is 784093751.

157390487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157390487 - 2² = 157390483 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157390483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78695243 + 78695244.

It is an arithmetic number, because the mean of its divisors is an integer number (78695244).

Almost surely, 2^157390487 is an apocalyptic number.

157390487 is a deficient number, since it is larger than the sum of its proper divisors (1).

157390487 is an equidigital number, since it uses as much as digits as its factorization.

157390487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 157390487 is about 12545.5365369521. The cubic root of 157390487 is about 539.9159528544.

The spelling of 157390487 in words is "one hundred fifty-seven million, three hundred ninety thousand, four hundred eighty-seven".