23461551 has 12 divisors (see below), whose sum is σ = 35057880. Its totient is φ = 15101520.

The previous prime is 23461517. The next prime is 23461567. The reversal of 23461551 is 15516432.

It is not a de Polignac number, because 23461551 - 2⁷ = 23461423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23461511) 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, 44685 + ... + 45206.

It is an arithmetic number, because the mean of its divisors is an integer number (2921490).

Almost surely, 2^23461551 is an apocalyptic number.

23461551 is a deficient number, since it is larger than the sum of its proper divisors (11596329).

23461551 is a wasteful number, since it uses less digits than its factorization.

23461551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89926 (or 89923 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 23461551 is about 4843.7125224357. The cubic root of 23461551 is about 286.2764170302.

Adding to 23461551 its reverse (15516432), we get a palindrome (38977983).

The spelling of 23461551 in words is "twenty-three million, four hundred sixty-one thousand, five hundred fifty-one".