23451145 has 16 divisors (see below), whose sum is σ = 29855232. Its totient is φ = 17645760.

The previous prime is 23451137. The next prime is 23451163. The reversal of 23451145 is 54115432.

It is a happy number.

It is not a de Polignac number, because 23451145 - 2³ = 23451137 is a prime.

It is a super-2 number, since 2×23451145² = 1099912403622050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5344 + ... + 8686.

It is an arithmetic number, because the mean of its divisors is an integer number (1865952).

Almost surely, 2^23451145 is an apocalyptic number.

It is an amenable number.

23451145 is a deficient number, since it is larger than the sum of its proper divisors (6404087).

23451145 is a wasteful number, since it uses less digits than its factorization.

23451145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3432.

The product of its digits is 2400, while the sum is 25.

The square root of 23451145 is about 4842.6382272476. The cubic root of 23451145 is about 286.2340863117.

Adding to 23451145 its reverse (54115432), we get a palindrome (77566577).

The spelling of 23451145 in words is "twenty-three million, four hundred fifty-one thousand, one hundred forty-five".