53250015 has 48 divisors (see below), whose sum is σ = 106753248. Its totient is φ = 22466304.

The previous prime is 53249983. The next prime is 53250023. The reversal of 53250015 is 51005235.

It is not a de Polignac number, because 53250015 - 2⁵ = 53249983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 53249973 and 53250000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6769 + ... + 12341.

It is an arithmetic number, because the mean of its divisors is an integer number (2224026).

Almost surely, 2^53250015 is an apocalyptic number.

53250015 is an abundant number, since it is smaller than the sum of its proper divisors (53503233).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53250015 is a wasteful number, since it uses less digits than its factorization.

53250015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5608 (or 5601 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 53250015 is about 7297.2607874462. The cubic root of 53250015 is about 376.2182955077.

The spelling of 53250015 in words is "fifty-three million, two hundred fifty thousand, fifteen".