572221667 has 2 divisors, whose sum is σ = 572221668. Its totient is φ = 572221666.

The previous prime is 572221627. The next prime is 572221691. The reversal of 572221667 is 766122275.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 572221667 - 2¹⁸ = 571959523 is a prime.

It is equal to p_29948420 and since 572221667 and 29948420 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 572221667.

It is not a weakly prime, because it can be changed into another prime (572221627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286110833 + 286110834.

It is an arithmetic number, because the mean of its divisors is an integer number (286110834).

Almost surely, 2^572221667 is an apocalyptic number.

572221667 is a deficient number, since it is larger than the sum of its proper divisors (1).

572221667 is an equidigital number, since it uses as much as digits as its factorization.

572221667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 572221667 is about 23921.1552187598. The cubic root of 572221667 is about 830.2102660779.

The spelling of 572221667 in words is "five hundred seventy-two million, two hundred twenty-one thousand, six hundred sixty-seven".