72571567 has 2 divisors, whose sum is σ = 72571568. Its totient is φ = 72571566.

The previous prime is 72571561. The next prime is 72571571. The reversal of 72571567 is 76517527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72571567 - 2⁷ = 72571439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72571561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36285783 + 36285784.

It is an arithmetic number, because the mean of its divisors is an integer number (36285784).

Almost surely, 2^72571567 is an apocalyptic number.

72571567 is a deficient number, since it is larger than the sum of its proper divisors (1).

72571567 is an equidigital number, since it uses as much as digits as its factorization.

72571567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102900, while the sum is 40.

The square root of 72571567 is about 8518.8947053007. The cubic root of 72571567 is about 417.1147044742.

The spelling of 72571567 in words is "seventy-two million, five hundred seventy-one thousand, five hundred sixty-seven".