53323215 has 64 divisors (see below), whose sum is σ = 99740160. Its totient is φ = 24053760.

The previous prime is 53323187. The next prime is 53323243. The reversal of 53323215 is 51232335.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53323187) and next prime (53323243).

It is not a de Polignac number, because 53323215 - 2⁸ = 53322959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 228739 + ... + 228971.

It is an arithmetic number, because the mean of its divisors is an integer number (1558440).

Almost surely, 2^53323215 is an apocalyptic number.

53323215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

53323215 is a deficient number, since it is larger than the sum of its proper divisors (46416945).

53323215 is a wasteful number, since it uses less digits than its factorization.

53323215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344.

The product of its digits is 2700, while the sum is 24.

The square root of 53323215 is about 7302.2746456156. The cubic root of 53323215 is about 376.3906057563.

The spelling of 53323215 in words is "fifty-three million, three hundred twenty-three thousand, two hundred fifteen".