23041557 has 32 divisors (see below), whose sum is σ = 42562560. Its totient is φ = 11968560.

The previous prime is 23041553. The next prime is 23041567. The reversal of 23041557 is 75514032.

It is a happy number.

It is not a de Polignac number, because 23041557 - 2² = 23041553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 23041557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23041553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3463 + ... + 7620.

It is an arithmetic number, because the mean of its divisors is an integer number (1330080).

Almost surely, 2^23041557 is an apocalyptic number.

23041557 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

23041557 is a deficient number, since it is larger than the sum of its proper divisors (19521003).

23041557 is a wasteful number, since it uses less digits than its factorization.

23041557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110 (or 11104 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 23041557 is about 4800.1621847600. The cubic root of 23041557 is about 284.5578740330.

Adding to 23041557 its reverse (75514032), we get a palindrome (98555589).

The spelling of 23041557 in words is "twenty-three million, forty-one thousand, five hundred fifty-seven".