53015215 has 8 divisors (see below), whose sum is σ = 69401808. Its totient is φ = 38556480.

The previous prime is 53015167. The next prime is 53015273. The reversal of 53015215 is 51251035.

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

It is not a de Polignac number, because 53015215 - 2¹¹ = 53013167 is a prime.

It is a super-2 number, since 2×53015215² = 5621226042992450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 481902 + ... + 482011.

It is an arithmetic number, because the mean of its divisors is an integer number (8675226).

Almost surely, 2^53015215 is an apocalyptic number.

53015215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

53015215 is a deficient number, since it is larger than the sum of its proper divisors (16386593).

53015215 is a wasteful number, since it uses less digits than its factorization.

53015215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963929.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 53015215 is about 7281.1547847852. The cubic root of 53015215 is about 375.6645165665.

The spelling of 53015215 in words is "fifty-three million, fifteen thousand, two hundred fifteen".