23407553 has 12 divisors (see below), whose sum is σ = 26119548. Its totient is φ = 20852160.

The previous prime is 23407541. The next prime is 23407561. The reversal of 23407553 is 35570432.

It can be written as a sum of positive squares in 6 ways, for example, as 300304 + 23107249 = 548^2 + 4807^2 .

It is not a de Polignac number, because 23407553 - 2¹⁰ = 23406529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23407513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9863 + ... + 12003.

It is an arithmetic number, because the mean of its divisors is an integer number (2176629).

Almost surely, 2^23407553 is an apocalyptic number.

It is an amenable number.

23407553 is a deficient number, since it is larger than the sum of its proper divisors (2711995).

23407553 is a wasteful number, since it uses less digits than its factorization.

23407553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212 (or 2183 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 23407553 is about 4838.1352812835. The cubic root of 23407553 is about 286.0566215506.

Adding to 23407553 its reverse (35570432), we get a palindrome (58977985).

The spelling of 23407553 in words is "twenty-three million, four hundred seven thousand, five hundred fifty-three".