90572737 has 2 divisors, whose sum is σ = 90572738. Its totient is φ = 90572736.

The previous prime is 90572723. The next prime is 90572759. The reversal of 90572737 is 73727509.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66601921 + 23970816 = 8161^2 + 4896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90572737 is a prime.

It is a super-3 number, since 3×90572737³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90572737.

It is not a weakly prime, because it can be changed into another prime (90572767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45286368 + 45286369.

It is an arithmetic number, because the mean of its divisors is an integer number (45286369).

Almost surely, 2^90572737 is an apocalyptic number.

It is an amenable number.

90572737 is a deficient number, since it is larger than the sum of its proper divisors (1).

90572737 is an equidigital number, since it uses as much as digits as its factorization.

90572737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92610, while the sum is 40.

The square root of 90572737 is about 9516.9709992203. The cubic root of 90572737 is about 449.0890824119.

The spelling of 90572737 in words is "ninety million, five hundred seventy-two thousand, seven hundred thirty-seven".