22973537 has 4 divisors (see below), whose sum is σ = 23025840. Its totient is φ = 22921236.

The previous prime is 22973513. The next prime is 22973543. The reversal of 22973537 is 73537922.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73537922 = 2 ⋅36768961.

It is a cyclic number.

It is not a de Polignac number, because 22973537 - 2⁶ = 22973473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22973537.

It is not an unprimeable number, because it can be changed into a prime (22973507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25487 + ... + 26372.

It is an arithmetic number, because the mean of its divisors is an integer number (5756460).

Almost surely, 2^22973537 is an apocalyptic number.

It is an amenable number.

22973537 is a deficient number, since it is larger than the sum of its proper divisors (52303).

22973537 is an equidigital number, since it uses as much as digits as its factorization.

22973537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52302.

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

The square root of 22973537 is about 4793.0717707958. The cubic root of 22973537 is about 284.2775876473.

The spelling of 22973537 in words is "twenty-two million, nine hundred seventy-three thousand, five hundred thirty-seven".