1587400051 has 6 divisors (see below), whose sum is σ = 1600013940. Its totient is φ = 1574884836.

The previous prime is 1587400021. The next prime is 1587400069. The reversal of 1587400051 is 1500047851.

It is not a de Polignac number, because 1587400051 - 2⁷ = 1587399923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1587399986 and 1587400022.

It is not an unprimeable number, because it can be changed into a prime (1587400021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33081 + ... + 65338.

It is an arithmetic number, because the mean of its divisors is an integer number (266668990).

Almost surely, 2^1587400051 is an apocalyptic number.

1587400051 is a deficient number, since it is larger than the sum of its proper divisors (12613889).

1587400051 is an frugal number, since it uses more digits than its factorization.

1587400051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98673 (or 98546 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 1587400051 is about 39842.1893349249. The cubic root of 1587400051 is about 1166.5287943832.

The spelling of 1587400051 in words is "one billion, five hundred eighty-seven million, four hundred thousand, fifty-one".