49081515 has 64 divisors (see below), whose sum is σ = 93327360. Its totient is φ = 21565440.

The previous prime is 49081511. The next prime is 49081531. The reversal of 49081515 is 51518094.

It is not a de Polignac number, because 49081515 - 2² = 49081511 is a prime.

It is a super-2 number, since 2×49081515² = 4817990229390450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49081511) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 505947 + ... + 506043.

It is an arithmetic number, because the mean of its divisors is an integer number (1458240).

Almost surely, 2^49081515 is an apocalyptic number.

49081515 is a deficient number, since it is larger than the sum of its proper divisors (44245845).

49081515 is a wasteful number, since it uses less digits than its factorization.

49081515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 49081515 is about 7005.8200804759. The cubic root of 49081515 is about 366.1333757980.

The spelling of 49081515 in words is "forty-nine million, eighty-one thousand, five hundred fifteen".