72252473 has 2 divisors, whose sum is σ = 72252474. Its totient is φ = 72252472.

The previous prime is 72252469. The next prime is 72252529. The reversal of 72252473 is 37425227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70023424 + 2229049 = 8368^2 + 1493^2 .

It is a cyclic number.

It is not a de Polignac number, because 72252473 - 2² = 72252469 is a prime.

It is equal to p_4242749 and since 72252473 and 4242749 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (72252773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36126236 + 36126237.

It is an arithmetic number, because the mean of its divisors is an integer number (36126237).

Almost surely, 2^72252473 is an apocalyptic number.

It is an amenable number.

72252473 is a deficient number, since it is larger than the sum of its proper divisors (1).

72252473 is an equidigital number, since it uses as much as digits as its factorization.

72252473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 32.

The square root of 72252473 is about 8500.1454693435. The cubic root of 72252473 is about 416.5024612341.

The spelling of 72252473 in words is "seventy-two million, two hundred fifty-two thousand, four hundred seventy-three".