115511651 has 16 divisors (see below), whose sum is σ = 124498944. Its totient is φ = 106788864.

The previous prime is 115511639. The next prime is 115511657. The reversal of 115511651 is 156115511.

It is a cyclic number.

It is not a de Polignac number, because 115511651 - 2¹⁰ = 115510627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115511651.

It is not an unprimeable number, because it can be changed into a prime (115511657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301406 + ... + 301788.

It is an arithmetic number, because the mean of its divisors is an integer number (7781184).

Almost surely, 2^115511651 is an apocalyptic number.

115511651 is a deficient number, since it is larger than the sum of its proper divisors (8987293).

115511651 is a wasteful number, since it uses less digits than its factorization.

115511651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670.

The product of its digits is 750, while the sum is 26.

The square root of 115511651 is about 10747.6346700100. The cubic root of 115511651 is about 487.0145433439.

The spelling of 115511651 in words is "one hundred fifteen million, five hundred eleven thousand, six hundred fifty-one".