23551461 has 6 divisors (see below), whose sum is σ = 34018790. Its totient is φ = 15700968.

The previous prime is 23551459. The next prime is 23551501. The reversal of 23551461 is 16415532.

It can be written as a sum of positive squares in only one way, i.e., 23184225 + 367236 = 4815^2 + 606^2 .

It is not a de Polignac number, because 23551461 - 2¹ = 23551459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23551441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1308406 + ... + 1308423.

Almost surely, 2^23551461 is an apocalyptic number.

It is an amenable number.

23551461 is a deficient number, since it is larger than the sum of its proper divisors (10467329).

23551461 is a wasteful number, since it uses less digits than its factorization.

23551461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616835 (or 2616832 counting only the distinct ones).

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

The square root of 23551461 is about 4852.9847516760. The cubic root of 23551461 is about 286.6416429993.

Adding to 23551461 its reverse (16415532), we get a palindrome (39966993).

The spelling of 23551461 in words is "twenty-three million, five hundred fifty-one thousand, four hundred sixty-one".