48777021 has 12 divisors (see below), whose sum is σ = 70569148. Its totient is φ = 32465664.

The previous prime is 48776983. The next prime is 48777061. The reversal of 48777021 is 12077784.

It can be written as a sum of positive squares in 2 ways, for example, as 27154521 + 21622500 = 5211^2 + 4650^2 .

It is not a de Polignac number, because 48777021 - 2¹⁰ = 48775997 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 (48777061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2031 + ... + 10083.

Almost surely, 2^48777021 is an apocalyptic number.

It is an amenable number.

48777021 is a deficient number, since it is larger than the sum of its proper divisors (21792127).

48777021 is a wasteful number, since it uses less digits than its factorization.

48777021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8732 (or 8729 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 48777021 is about 6984.0547678265. The cubic root of 48777021 is about 365.3746600166.

The spelling of 48777021 in words is "forty-eight million, seven hundred seventy-seven thousand, twenty-one".