47566621 has 4 divisors (see below), whose sum is σ = 47601472. Its totient is φ = 47531772.

The previous prime is 47566613. The next prime is 47566627. The reversal of 47566621 is 12666574.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12666574 = 2 ⋅6333287.

It is a cyclic number.

It is not a de Polignac number, because 47566621 - 2³ = 47566613 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 (47566627) 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, 15291 + ... + 18136.

It is an arithmetic number, because the mean of its divisors is an integer number (11900368).

Almost surely, 2^47566621 is an apocalyptic number.

It is an amenable number.

47566621 is a deficient number, since it is larger than the sum of its proper divisors (34851).

47566621 is a wasteful number, since it uses less digits than its factorization.

47566621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34850.

The product of its digits is 60480, while the sum is 37.

The square root of 47566621 is about 6896.8558778620. The cubic root of 47566621 is about 362.3270575767.

The spelling of 47566621 in words is "forty-seven million, five hundred sixty-six thousand, six hundred twenty-one".