52643550 has 48 divisors (see below), whose sum is σ = 136241280. Its totient is φ = 13427040.

The previous prime is 52643531. The next prime is 52643551. The reversal of 52643550 is 5534625.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52643551) 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, 4180 + ... + 11079.

It is an arithmetic number, because the mean of its divisors is an integer number (2838360).

Almost surely, 2^52643550 is an apocalyptic number.

52643550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

52643550 is an abundant number, since it is smaller than the sum of its proper divisors (83597730).

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

52643550 is a wasteful number, since it uses less digits than its factorization.

52643550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15297 (or 15292 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 52643550 is about 7255.5875020566. The cubic root of 52643550 is about 374.7845873946.

The spelling of 52643550 in words is "fifty-two million, six hundred forty-three thousand, five hundred fifty".