2015007157 has 4 divisors (see below), whose sum is σ = 2018093580. Its totient is φ = 2011920736.

The previous prime is 2015007149. The next prime is 2015007179. The reversal of 2015007157 is 7517005102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 305515441 + 1709491716 = 17479^2 + 41346^2 .

It is a cyclic number.

It is not a de Polignac number, because 2015007157 - 2³ = 2015007149 is a prime.

It is a super-2 number, since 2×2015007157² = 8120507685522445298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015007257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542232 + ... + 1543537.

It is an arithmetic number, because the mean of its divisors is an integer number (504523395).

Almost surely, 2^2015007157 is an apocalyptic number.

It is an amenable number.

2015007157 is a deficient number, since it is larger than the sum of its proper divisors (3086423).

2015007157 is an equidigital number, since it uses as much as digits as its factorization.

2015007157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086422.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 2015007157 is about 44888.8310941597. The cubic root of 2015007157 is about 1263.0645060667.

The spelling of 2015007157 in words is "two billion, fifteen million, seven thousand, one hundred fifty-seven".