64532455 has 16 divisors (see below), whose sum is σ = 87786720. Its totient is φ = 45145728.

The previous prime is 64532437. The next prime is 64532491. The reversal of 64532455 is 55423546.

It is a cyclic number.

It is not a de Polignac number, because 64532455 - 2⁵ = 64532423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64532455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24892 + ... + 27361.

It is an arithmetic number, because the mean of its divisors is an integer number (5486670).

Almost surely, 2^64532455 is an apocalyptic number.

64532455 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64532455 is a deficient number, since it is larger than the sum of its proper divisors (23254265).

64532455 is a wasteful number, since it uses less digits than its factorization.

64532455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52290.

The product of its digits is 72000, while the sum is 34.

The square root of 64532455 is about 8033.2095080360. The cubic root of 64532455 is about 401.1062191279.

The spelling of 64532455 in words is "sixty-four million, five hundred thirty-two thousand, four hundred fifty-five".