53420515 has 4 divisors (see below), whose sum is σ = 64104624. Its totient is φ = 42736408.

The previous prime is 53420503. The next prime is 53420539. The reversal of 53420515 is 51502435.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53420515 - 2⁵ = 53420483 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 53420515.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5342047 + ... + 5342056.

It is an arithmetic number, because the mean of its divisors is an integer number (16026156).

Almost surely, 2^53420515 is an apocalyptic number.

53420515 is a deficient number, since it is larger than the sum of its proper divisors (10684109).

53420515 is a wasteful number, since it uses less digits than its factorization.

53420515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10684108.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 53420515 is about 7308.9339167898. The cubic root of 53420515 is about 376.6194026198.

It can be divided in two parts, 53420 and 515, that added together give a palindrome (53935).

The spelling of 53420515 in words is "fifty-three million, four hundred twenty thousand, five hundred fifteen".