49756421 has 16 divisors (see below), whose sum is σ = 61535040. Its totient is φ = 39553920.

The previous prime is 49756417. The next prime is 49756423. The reversal of 49756421 is 12465794.

It is a cyclic number.

It is not a de Polignac number, because 49756421 - 2² = 49756417 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 (49756423) 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, 6440 + ... + 11873.

It is an arithmetic number, because the mean of its divisors is an integer number (3845940).

Almost surely, 2^49756421 is an apocalyptic number.

It is an amenable number.

49756421 is a deficient number, since it is larger than the sum of its proper divisors (11778619).

49756421 is a wasteful number, since it uses less digits than its factorization.

49756421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18356.

The product of its digits is 60480, while the sum is 38.

The square root of 49756421 is about 7053.8231477689. The cubic root of 49756421 is about 367.8039406373.

The spelling of 49756421 in words is "forty-nine million, seven hundred fifty-six thousand, four hundred twenty-one".