97223537 has 2 divisors, whose sum is σ = 97223538. Its totient is φ = 97223536.

The previous prime is 97223519. The next prime is 97223591. The reversal of 97223537 is 73532279.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90649441 + 6574096 = 9521^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 97223537 - 2⁸ = 97223281 is a prime.

It is a super-2 number, since 2×97223537² = 18904832293580738, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97223537.

It is not a weakly prime, because it can be changed into another prime (97223597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48611768 + 48611769.

It is an arithmetic number, because the mean of its divisors is an integer number (48611769).

Almost surely, 2^97223537 is an apocalyptic number.

It is an amenable number.

97223537 is a deficient number, since it is larger than the sum of its proper divisors (1).

97223537 is an equidigital number, since it uses as much as digits as its factorization.

97223537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 38.

The square root of 97223537 is about 9860.1996430093. The cubic root of 97223537 is about 459.8227688383.

The spelling of 97223537 in words is "ninety-seven million, two hundred twenty-three thousand, five hundred thirty-seven".