47455621 has 8 divisors (see below), whose sum is σ = 48898904. Its totient is φ = 46033920.

The previous prime is 47455613. The next prime is 47455633. The reversal of 47455621 is 12655474.

It can be written as a sum of positive squares in 4 ways, for example, as 1079521 + 46376100 = 1039^2 + 6810^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47455621 - 2³ = 47455613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47455651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 876 + ... + 9781.

It is an arithmetic number, because the mean of its divisors is an integer number (6112363).

Almost surely, 2^47455621 is an apocalyptic number.

It is an amenable number.

47455621 is a deficient number, since it is larger than the sum of its proper divisors (1443283).

47455621 is a wasteful number, since it uses less digits than its factorization.

47455621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10791.

The product of its digits is 33600, while the sum is 34.

The square root of 47455621 is about 6888.8040326315. The cubic root of 47455621 is about 362.0449996459.

The spelling of 47455621 in words is "forty-seven million, four hundred fifty-five thousand, six hundred twenty-one".