48644857 has 4 divisors (see below), whose sum is σ = 48994960. Its totient is φ = 48294756.

The previous prime is 48644833. The next prime is 48644863. The reversal of 48644857 is 75844684.

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 a de Polignac number, because none of the positive numbers 2^k-48644857 is a prime.

It is a super-2 number, since 2×48644857² = 4732644225100898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48644887) 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, 174843 + ... + 175120.

It is an arithmetic number, because the mean of its divisors is an integer number (12248740).

Almost surely, 2^48644857 is an apocalyptic number.

It is an amenable number.

48644857 is a deficient number, since it is larger than the sum of its proper divisors (350103).

48644857 is a wasteful number, since it uses less digits than its factorization.

48644857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350102.

The product of its digits is 860160, while the sum is 46.

The square root of 48644857 is about 6974.5865110414. The cubic root of 48644857 is about 365.0443606558.

The spelling of 48644857 in words is "forty-eight million, six hundred forty-four thousand, eight hundred fifty-seven".