48212581 has 4 divisors (see below), whose sum is σ = 48234592. Its totient is φ = 48190572.

The previous prime is 48212579. The next prime is 48212609. The reversal of 48212581 is 18521284.

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 not a de Polignac number, because 48212581 - 2¹ = 48212579 is a prime.

It is a super-2 number, since 2×48212581² = 4648905933363122, 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 (48212501) 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, 7305 + ... + 12238.

It is an arithmetic number, because the mean of its divisors is an integer number (12058648).

Almost surely, 2^48212581 is an apocalyptic number.

It is an amenable number.

48212581 is a deficient number, since it is larger than the sum of its proper divisors (22011).

48212581 is a wasteful number, since it uses less digits than its factorization.

48212581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22010.

The product of its digits is 5120, while the sum is 31.

The square root of 48212581 is about 6943.5279937507. The cubic root of 48212581 is about 363.9598358655.

The spelling of 48212581 in words is "forty-eight million, two hundred twelve thousand, five hundred eighty-one".