52290815 has 8 divisors (see below), whose sum is σ = 63812880. Its totient is φ = 41123392.

The previous prime is 52290809. The next prime is 52290817. The reversal of 52290815 is 51809225.

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

It is a cyclic number.

It is not a de Polignac number, because 52290815 - 2⁶ = 52290751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52290817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88334 + ... + 88923.

It is an arithmetic number, because the mean of its divisors is an integer number (7976610).

Almost surely, 2^52290815 is an apocalyptic number.

52290815 is a deficient number, since it is larger than the sum of its proper divisors (11522065).

52290815 is a wasteful number, since it uses less digits than its factorization.

52290815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177321.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 52290815 is about 7231.2388288591. The cubic root of 52290815 is about 373.9456368123.

The spelling of 52290815 in words is "fifty-two million, two hundred ninety thousand, eight hundred fifteen".