49923021 has 16 divisors (see below), whose sum is σ = 67814784. Its totient is φ = 32661504.

The previous prime is 49922993. The next prime is 49923047. The reversal of 49923021 is 12032994.

It is not a de Polignac number, because 49923021 - 2¹¹ = 49920973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49923021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49923091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55840 + ... + 56726.

It is an arithmetic number, because the mean of its divisors is an integer number (4238424).

Almost surely, 2^49923021 is an apocalyptic number.

It is an amenable number.

49923021 is a deficient number, since it is larger than the sum of its proper divisors (17891763).

49923021 is a wasteful number, since it uses less digits than its factorization.

49923021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 49923021 is about 7065.6224778854. The cubic root of 49923021 is about 368.2139907151.

The spelling of 49923021 in words is "forty-nine million, nine hundred twenty-three thousand, twenty-one".