49977145 has 16 divisors (see below), whose sum is σ = 61731072. Its totient is φ = 38825280.

The previous prime is 49977143. The next prime is 49977173. The reversal of 49977145 is 54177994.

It is not a de Polignac number, because 49977145 - 2¹ = 49977143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49977095 and 49977104.

It is not an unprimeable number, because it can be changed into a prime (49977143) 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, 26380 + ... + 28210.

It is an arithmetic number, because the mean of its divisors is an integer number (3858192).

Almost surely, 2^49977145 is an apocalyptic number.

It is an amenable number.

49977145 is a deficient number, since it is larger than the sum of its proper divisors (11753927).

49977145 is a wasteful number, since it uses less digits than its factorization.

49977145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992.

The product of its digits is 317520, while the sum is 46.

The square root of 49977145 is about 7069.4515345959. The cubic root of 49977145 is about 368.3470089492.

The spelling of 49977145 in words is "forty-nine million, nine hundred seventy-seven thousand, one hundred forty-five".