49851515 has 16 divisors (see below), whose sum is σ = 68672448. Its totient is φ = 34031616.

The previous prime is 49851499. The next prime is 49851521. The reversal of 49851515 is 51515894.

It is a cyclic number.

It is not a de Polignac number, because 49851515 - 2⁴ = 49851499 is a prime.

It is a Duffinian number.

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, 5099 + ... + 11211.

It is an arithmetic number, because the mean of its divisors is an integer number (4292028).

Almost surely, 2^49851515 is an apocalyptic number.

49851515 is a deficient number, since it is larger than the sum of its proper divisors (18820933).

49851515 is a wasteful number, since it uses less digits than its factorization.

49851515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6358.

The product of its digits is 36000, while the sum is 38.

The square root of 49851515 is about 7060.5605301562. The cubic root of 49851515 is about 368.0381059902.

The spelling of 49851515 in words is "forty-nine million, eight hundred fifty-one thousand, five hundred fifteen".