157415987 has 8 divisors (see below), whose sum is σ = 158862000. Its totient is φ = 155976480.

The previous prime is 157415981. The next prime is 157416013. The reversal of 157415987 is 789514751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157415987 - 2²² = 153221683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157415981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55889 + ... + 58637.

It is an arithmetic number, because the mean of its divisors is an integer number (19857750).

Almost surely, 2^157415987 is an apocalyptic number.

157415987 is a deficient number, since it is larger than the sum of its proper divisors (1446013).

157415987 is a wasteful number, since it uses less digits than its factorization.

157415987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253.

The product of its digits is 352800, while the sum is 47.

The square root of 157415987 is about 12546.5527934967. The cubic root of 157415987 is about 539.9451098757.

The spelling of 157415987 in words is "one hundred fifty-seven million, four hundred fifteen thousand, nine hundred eighty-seven".