23020551 has 8 divisors (see below), whose sum is σ = 34104560. Its totient is φ = 15347016.

The previous prime is 23020511. The next prime is 23020573. The reversal of 23020551 is 15502032.

It is a happy number.

It is not a de Polignac number, because 23020551 - 2¹¹ = 23018503 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 (23020511) 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, 426280 + ... + 426333.

It is an arithmetic number, because the mean of its divisors is an integer number (4263070).

Almost surely, 2^23020551 is an apocalyptic number.

23020551 is a deficient number, since it is larger than the sum of its proper divisors (11084009).

23020551 is an equidigital number, since it uses as much as digits as its factorization.

23020551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852622 (or 852616 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 23020551 is about 4797.9736347754. The cubic root of 23020551 is about 284.4713746690.

Adding to 23020551 its reverse (15502032), we get a palindrome (38522583).

The spelling of 23020551 in words is "twenty-three million, twenty thousand, five hundred fifty-one".