47622621 has 4 divisors (see below), whose sum is σ = 63496832. Its totient is φ = 31748412.

The previous prime is 47622613. The next prime is 47622623. The reversal of 47622621 is 12622674.

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 not a de Polignac number, because 47622621 - 2³ = 47622613 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 (47622623) 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, 7937101 + ... + 7937106.

It is an arithmetic number, because the mean of its divisors is an integer number (15874208).

Almost surely, 2^47622621 is an apocalyptic number.

It is an amenable number.

47622621 is a deficient number, since it is larger than the sum of its proper divisors (15874211).

47622621 is a wasteful number, since it uses less digits than its factorization.

47622621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15874210.

The product of its digits is 8064, while the sum is 30.

The square root of 47622621 is about 6900.9145046146. The cubic root of 47622621 is about 362.4691905643.

The spelling of 47622621 in words is "forty-seven million, six hundred twenty-two thousand, six hundred twenty-one".