49191651 has 8 divisors (see below), whose sum is σ = 72876560. Its totient is φ = 32794416.

The previous prime is 49191643. The next prime is 49191671. The reversal of 49191651 is 15619194.

49191651 is a `hidden beast` number, since 491 + 9 + 165 + 1 = 666.

It is not a de Polignac number, because 49191651 - 2³ = 49191643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49191671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910930 + ... + 910983.

It is an arithmetic number, because the mean of its divisors is an integer number (9109570).

Almost surely, 2^49191651 is an apocalyptic number.

49191651 is a deficient number, since it is larger than the sum of its proper divisors (23684909).

49191651 is a wasteful number, since it uses less digits than its factorization.

49191651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821922 (or 1821916 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 49191651 is about 7013.6759976492. The cubic root of 49191651 is about 366.4070317159.

The spelling of 49191651 in words is "forty-nine million, one hundred ninety-one thousand, six hundred fifty-one".