49699151 has 4 divisors (see below), whose sum is σ = 49934904. Its totient is φ = 49463400.

The previous prime is 49699147. The next prime is 49699157. The reversal of 49699151 is 15199694.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15199694 = 2 ⋅7599847.

It is a cyclic number.

It is not a de Polignac number, because 49699151 - 2² = 49699147 is a prime.

It is a super-2 number, since 2×49699151² = 4940011220241602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49699157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117560 + ... + 117981.

It is an arithmetic number, because the mean of its divisors is an integer number (12483726).

Almost surely, 2^49699151 is an apocalyptic number.

49699151 is a deficient number, since it is larger than the sum of its proper divisors (235753).

49699151 is a wasteful number, since it uses less digits than its factorization.

49699151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235752.

The product of its digits is 87480, while the sum is 44.

The square root of 49699151 is about 7049.7624782683. The cubic root of 49699151 is about 367.6627714636.

The spelling of 49699151 in words is "forty-nine million, six hundred ninety-nine thousand, one hundred fifty-one".