472472621 has 2 divisors, whose sum is σ = 472472622. Its totient is φ = 472472620.

The previous prime is 472472617. The next prime is 472472629. The reversal of 472472621 is 126274274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317196100 + 155276521 = 17810^2 + 12461^2 .

It is a cyclic number.

It is not a de Polignac number, because 472472621 - 2² = 472472617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472472629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236236310 + 236236311.

It is an arithmetic number, because the mean of its divisors is an integer number (236236311).

Almost surely, 2^472472621 is an apocalyptic number.

It is an amenable number.

472472621 is a deficient number, since it is larger than the sum of its proper divisors (1).

472472621 is an equidigital number, since it uses as much as digits as its factorization.

472472621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 35.

The square root of 472472621 is about 21736.4353333292. The cubic root of 472472621 is about 778.8590710404.

The spelling of 472472621 in words is "four hundred seventy-two million, four hundred seventy-two thousand, six hundred twenty-one".