48021917 has 4 divisors (see below), whose sum is σ = 48139740. Its totient is φ = 47904096.

The previous prime is 48021881. The next prime is 48021931. The reversal of 48021917 is 71912084.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42954916 + 5067001 = 6554^2 + 2251^2 .

It is a cyclic number.

It is not a de Polignac number, because 48021917 - 2²⁰ = 46973341 is a prime.

It is a super-2 number, since 2×48021917² = 4612209024709778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48021937) 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, 58298 + ... + 59115.

It is an arithmetic number, because the mean of its divisors is an integer number (12034935).

Almost surely, 2^48021917 is an apocalyptic number.

It is an amenable number.

48021917 is a deficient number, since it is larger than the sum of its proper divisors (117823).

48021917 is a wasteful number, since it uses less digits than its factorization.

48021917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117822.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 48021917 is about 6929.7847729926. The cubic root of 48021917 is about 363.4794238053.

The spelling of 48021917 in words is "forty-eight million, twenty-one thousand, nine hundred seventeen".