49725891 has 24 divisors (see below), whose sum is σ = 76162944. Its totient is φ = 31207680.

The previous prime is 49725883. The next prime is 49725899. The reversal of 49725891 is 19852794.

It is an interprime number because it is at equal distance from previous prime (49725883) and next prime (49725899).

It is not a de Polignac number, because 49725891 - 2³ = 49725883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49725899) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7915 + ... + 12731.

It is an arithmetic number, because the mean of its divisors is an integer number (3173456).

Almost surely, 2^49725891 is an apocalyptic number.

49725891 is a deficient number, since it is larger than the sum of its proper divisors (26437053).

49725891 is a wasteful number, since it uses less digits than its factorization.

49725891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891 (or 4888 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 49725891 is about 7051.6587410339. The cubic root of 49725891 is about 367.7286984103.

The spelling of 49725891 in words is "forty-nine million, seven hundred twenty-five thousand, eight hundred ninety-one".