48165221 has 4 divisors (see below), whose sum is σ = 51870252. Its totient is φ = 44460192.

The previous prime is 48165217. The next prime is 48165223. The reversal of 48165221 is 12256184.

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 3422500 + 44742721 = 1850^2 + 6689^2 .

It is a cyclic number.

It is not a de Polignac number, because 48165221 - 2² = 48165217 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 (48165223) 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, 1852496 + ... + 1852521.

It is an arithmetic number, because the mean of its divisors is an integer number (12967563).

Almost surely, 2^48165221 is an apocalyptic number.

It is an amenable number.

48165221 is a deficient number, since it is larger than the sum of its proper divisors (3705031).

48165221 is a wasteful number, since it uses less digits than its factorization.

48165221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3705030.

The product of its digits is 3840, while the sum is 29.

The square root of 48165221 is about 6940.1167857609. The cubic root of 48165221 is about 363.8406222726.

The spelling of 48165221 in words is "forty-eight million, one hundred sixty-five thousand, two hundred twenty-one".