49857564 has 12 divisors (see below), whose sum is σ = 116334344. Its totient is φ = 16619184.

The previous prime is 49857559. The next prime is 49857569. The reversal of 49857564 is 46575894.

It is an interprime number because it is at equal distance from previous prime (49857559) and next prime (49857569).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49857569) 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, 2077387 + ... + 2077410.

Almost surely, 2^49857564 is an apocalyptic number.

It is an amenable number.

49857564 is an abundant number, since it is smaller than the sum of its proper divisors (66476780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49857564 is a wasteful number, since it uses less digits than its factorization.

49857564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154804 (or 4154802 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 49857564 is about 7060.9888825858. The cubic root of 49857564 is about 368.0529913450.

The spelling of 49857564 in words is "forty-nine million, eight hundred fifty-seven thousand, five hundred sixty-four".