5156321000 has 64 divisors (see below), whose sum is σ = 12775585680. Its totient is φ = 1941196800.

The previous prime is 5156320993. The next prime is 5156321011. The reversal of 5156321000 is 1236515.

It can be written as a sum of positive squares in 8 ways, for example, as 1419933124 + 3736387876 = 37682^2 + 61126^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134657 + ... + 168656.

Almost surely, 2^5156321000 is an apocalyptic number.

5156321000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5156321000 is an abundant number, since it is smaller than the sum of its proper divisors (7619264680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5156321000 is a wasteful number, since it uses less digits than its factorization.

5156321000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303351 (or 303337 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 5156321000 is about 71807.5274605664. The cubic root of 5156321000 is about 1727.6137370026.

Adding to 5156321000 its reverse (1236515), we get a palindrome (5157557515).

The spelling of 5156321000 in words is "five billion, one hundred fifty-six million, three hundred twenty-one thousand".