52621855 has 16 divisors (see below), whose sum is σ = 74186784. Its totient is φ = 35326080.

The previous prime is 52621853. The next prime is 52621879. The reversal of 52621855 is 55812625.

It is not a de Polignac number, because 52621855 - 2¹ = 52621853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52621855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52621853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36084 + ... + 37513.

It is an arithmetic number, because the mean of its divisors is an integer number (4636674).

Almost surely, 2^52621855 is an apocalyptic number.

52621855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

52621855 is a deficient number, since it is larger than the sum of its proper divisors (21564929).

52621855 is a wasteful number, since it uses less digits than its factorization.

52621855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73626.

The product of its digits is 24000, while the sum is 34.

The square root of 52621855 is about 7254.0922933197. The cubic root of 52621855 is about 374.7330960037.

It can be divided in two parts, 5262 and 1855, that added together give a palindrome (7117).

The spelling of 52621855 in words is "fifty-two million, six hundred twenty-one thousand, eight hundred fifty-five".