53323590 has 16 divisors (see below), whose sum is σ = 127976688. Its totient is φ = 14219616.

The previous prime is 53323583. The next prime is 53323609. The reversal of 53323590 is 9532335.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1777453 = 53323590 / (5 + 3 + 3 + 2 + 3 + 5 + 9 + 0).

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, 888697 + ... + 888756.

It is an arithmetic number, because the mean of its divisors is an integer number (7998543).

Almost surely, 2^53323590 is an apocalyptic number.

53323590 is an abundant number, since it is smaller than the sum of its proper divisors (74653098).

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

53323590 is a wasteful number, since it uses less digits than its factorization.

53323590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777463.

The product of its (nonzero) digits is 12150, while the sum is 30.

The square root of 53323590 is about 7302.3003225011. The cubic root of 53323590 is about 376.3914880871.

The spelling of 53323590 in words is "fifty-three million, three hundred twenty-three thousand, five hundred ninety".