1587287157 has 16 divisors (see below), whose sum is σ = 2137129728. Its totient is φ = 1047836160.

The previous prime is 1587287153. The next prime is 1587287179. The reversal of 1587287157 is 7517827851.

It is a happy number.

It is not a de Polignac number, because 1587287157 - 2² = 1587287153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1587287153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 592932 + ... + 595602.

It is an arithmetic number, because the mean of its divisors is an integer number (133570608).

Almost surely, 2^1587287157 is an apocalyptic number.

It is an amenable number.

1587287157 is a deficient number, since it is larger than the sum of its proper divisors (549842571).

1587287157 is a wasteful number, since it uses less digits than its factorization.

1587287157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4540.

The product of its digits is 1097600, while the sum is 51.

The square root of 1587287157 is about 39840.7725452206. The cubic root of 1587287157 is about 1166.5011396816.

The spelling of 1587287157 in words is "one billion, five hundred eighty-seven million, two hundred eighty-seven thousand, one hundred fifty-seven".