2115512157 has 8 divisors (see below), whose sum is σ = 3077108640. Its totient is φ = 1282128560.

The previous prime is 2115512143. The next prime is 2115512167. The reversal of 2115512157 is 7512155112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2115512157 - 2⁸ = 2115511901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115512167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32053182 + ... + 32053247.

It is an arithmetic number, because the mean of its divisors is an integer number (384638580).

Almost surely, 2^2115512157 is an apocalyptic number.

It is an amenable number.

2115512157 is a deficient number, since it is larger than the sum of its proper divisors (961596483).

2115512157 is a wasteful number, since it uses less digits than its factorization.

2115512157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64106443.

The product of its digits is 3500, while the sum is 30.

The square root of 2115512157 is about 45994.6970530299. The cubic root of 2115512157 is about 1283.7245353646.

Adding to 2115512157 its reverse (7512155112), we get a palindrome (9627667269).

The spelling of 2115512157 in words is "two billion, one hundred fifteen million, five hundred twelve thousand, one hundred fifty-seven".