157436987 has 2 divisors, whose sum is σ = 157436988. Its totient is φ = 157436986.

The previous prime is 157436971. The next prime is 157436999. The reversal of 157436987 is 789634751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157436987 - 2⁴ = 157436971 is a prime.

It is not a weakly prime, because it can be changed into another prime (157436927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78718493 + 78718494.

It is an arithmetic number, because the mean of its divisors is an integer number (78718494).

Almost surely, 2^157436987 is an apocalyptic number.

157436987 is a deficient number, since it is larger than the sum of its proper divisors (1).

157436987 is an equidigital number, since it uses as much as digits as its factorization.

157436987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 50.

The square root of 157436987 is about 12547.3896488473. The cubic root of 157436987 is about 539.9691191760.

The spelling of 157436987 in words is "one hundred fifty-seven million, four hundred thirty-six thousand, nine hundred eighty-seven".