49972871 has 4 divisors (see below), whose sum is σ = 53816952. Its totient is φ = 46128792.

The previous prime is 49972817. The next prime is 49972883. The reversal of 49972871 is 17827994.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49972871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49972801) 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, 1922021 + ... + 1922046.

It is an arithmetic number, because the mean of its divisors is an integer number (13454238).

Almost surely, 2^49972871 is an apocalyptic number.

49972871 is a deficient number, since it is larger than the sum of its proper divisors (3844081).

49972871 is a wasteful number, since it uses less digits than its factorization.

49972871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844080.

The product of its digits is 254016, while the sum is 47.

The square root of 49972871 is about 7069.1492415990. The cubic root of 49972871 is about 368.3365084161.

The spelling of 49972871 in words is "forty-nine million, nine hundred seventy-two thousand, eight hundred seventy-one".