23081555 has 8 divisors (see below), whose sum is σ = 31654752. Its totient is φ = 15827328.

The previous prime is 23081551. The next prime is 23081557. The reversal of 23081555 is 55518032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23081555 - 2² = 23081551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23081551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329702 + ... + 329771.

It is an arithmetic number, because the mean of its divisors is an integer number (3956844).

Almost surely, 2^23081555 is an apocalyptic number.

23081555 is a deficient number, since it is larger than the sum of its proper divisors (8573197).

23081555 is an equidigital number, since it uses as much as digits as its factorization.

23081555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659485.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 23081555 is about 4804.3266958024. The cubic root of 23081555 is about 284.7224341841.

Adding to 23081555 its reverse (55518032), we get a palindrome (78599587).

The spelling of 23081555 in words is "twenty-three million, eighty-one thousand, five hundred fifty-five".