36121515 has 16 divisors (see below), whose sum is σ = 61194528. Its totient is φ = 18131456.

The previous prime is 36121499. The next prime is 36121529. The reversal of 36121515 is 51512163.

It is a cyclic number.

It is not a de Polignac number, because 36121515 - 2⁴ = 36121499 is a prime.

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, 70572 + ... + 71081.

It is an arithmetic number, because the mean of its divisors is an integer number (3824658).

Almost surely, 2^36121515 is an apocalyptic number.

36121515 is a deficient number, since it is larger than the sum of its proper divisors (25073013).

36121515 is a wasteful number, since it uses less digits than its factorization.

36121515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141678.

The product of its digits is 900, while the sum is 24.

The square root of 36121515 is about 6010.1177193130. The cubic root of 36121515 is about 330.5638203438.

Adding to 36121515 its reverse (51512163), we get a palindrome (87633678).

The spelling of 36121515 in words is "thirty-six million, one hundred twenty-one thousand, five hundred fifteen".