52640455 has 24 divisors (see below), whose sum is σ = 75480768. Its totient is φ = 35114688.

The previous prime is 52640453. The next prime is 52640461. The reversal of 52640455 is 55404625.

It is not a de Polignac number, because 52640455 - 2¹ = 52640453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52640453) 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, 6162 + ... + 11968.

It is an arithmetic number, because the mean of its divisors is an integer number (3145032).

Almost surely, 2^52640455 is an apocalyptic number.

52640455 is a deficient number, since it is larger than the sum of its proper divisors (22840313).

52640455 is a wasteful number, since it uses less digits than its factorization.

52640455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5863 (or 5856 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 52640455 is about 7255.3742150216. The cubic root of 52640455 is about 374.7772425186. Note that the first 3 decimals are identical.

The spelling of 52640455 in words is "fifty-two million, six hundred forty thousand, four hundred fifty-five".