23013550 has 48 divisors (see below), whose sum is σ = 49996800. Its totient is φ = 7716960.

The previous prime is 23013539. The next prime is 23013553. The reversal of 23013550 is 5531032.

23013550 = T₂₃₂ + T₂₃₃ + ... + T₅₃₁.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23013553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15751 + ... + 17149.

It is an arithmetic number, because the mean of its divisors is an integer number (1041600).

Almost surely, 2^23013550 is an apocalyptic number.

23013550 is an abundant number, since it is smaller than the sum of its proper divisors (26983250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23013550 is a wasteful number, since it uses less digits than its factorization.

23013550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465 (or 1460 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 23013550 is about 4797.2440004653. The cubic root of 23013550 is about 284.4425339747.

Adding to 23013550 its reverse (5531032), we get a palindrome (28544582).

The spelling of 23013550 in words is "twenty-three million, thirteen thousand, five hundred fifty".