53123515 has 8 divisors (see below), whose sum is σ = 63811728. Its totient is φ = 42456480.

The previous prime is 53123501. The next prime is 53123561. The reversal of 53123515 is 51532135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53123515 - 2²⁵ = 19569083 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 53123515.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885 + ... + 10345.

It is an arithmetic number, because the mean of its divisors is an integer number (7976466).

Almost surely, 2^53123515 is an apocalyptic number.

53123515 is a deficient number, since it is larger than the sum of its proper divisors (10688213).

53123515 is a wasteful number, since it uses less digits than its factorization.

53123515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10589.

The product of its digits is 2250, while the sum is 25.

The square root of 53123515 is about 7288.5879976851. The cubic root of 53123515 is about 375.9201462947.

The spelling of 53123515 in words is "fifty-three million, one hundred twenty-three thousand, five hundred fifteen".