2015156451 has 32 divisors (see below), whose sum is σ = 3357504000. Its totient is φ = 1044449280.

The previous prime is 2015156417. The next prime is 2015156467. The reversal of 2015156451 is 1546515102.

It is not a de Polignac number, because 2015156451 - 2⁷ = 2015156323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2015156401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94005 + ... + 113433.

It is an arithmetic number, because the mean of its divisors is an integer number (104922000).

Almost surely, 2^2015156451 is an apocalyptic number.

2015156451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2015156451 is a deficient number, since it is larger than the sum of its proper divisors (1342347549).

2015156451 is a wasteful number, since it uses less digits than its factorization.

2015156451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19899.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 2015156451 is about 44890.4939937176. The cubic root of 2015156451 is about 1263.0956992223.

The spelling of 2015156451 in words is "two billion, fifteen million, one hundred fifty-six thousand, four hundred fifty-one".