52545550 has 24 divisors (see below), whose sum is σ = 100379736. Its totient is φ = 20449440.

The previous prime is 52545539. The next prime is 52545551. The reversal of 52545550 is 5554525.

It is a super-2 number, since 2×52545550² = 5522069649605000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52545551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12352 + ... + 16051.

It is an arithmetic number, because the mean of its divisors is an integer number (4182489).

Almost surely, 2^52545550 is an apocalyptic number.

52545550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

52545550 is a deficient number, since it is larger than the sum of its proper divisors (47834186).

52545550 is a wasteful number, since it uses less digits than its factorization.

52545550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28452 (or 28447 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 31.

The square root of 52545550 is about 7248.8309402275. The cubic root of 52545550 is about 374.5518795296.

Subtracting from 52545550 its reverse (5554525), we obtain a square (46991025 = 6855²).

The spelling of 52545550 in words is "fifty-two million, five hundred forty-five thousand, five hundred fifty".