49977881 has 4 divisors (see below), whose sum is σ = 50445072. Its totient is φ = 49510692.

The previous prime is 49977877. The next prime is 49977899. The reversal of 49977881 is 18877994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49977881 - 2² = 49977877 is a prime.

It is a super-2 number, since 2×49977881² = 4995577178500322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49977871) 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, 233435 + ... + 233648.

It is an arithmetic number, because the mean of its divisors is an integer number (12611268).

Almost surely, 2^49977881 is an apocalyptic number.

It is an amenable number.

49977881 is a deficient number, since it is larger than the sum of its proper divisors (467191).

49977881 is a wasteful number, since it uses less digits than its factorization.

49977881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467190.

The product of its digits is 1016064, while the sum is 53.

The square root of 49977881 is about 7069.5035893618. The cubic root of 49977881 is about 368.3488171229.

The spelling of 49977881 in words is "forty-nine million, nine hundred seventy-seven thousand, eight hundred eighty-one".