53215390 has 32 divisors (see below), whose sum is σ = 101232000. Its totient is φ = 20085408.

The previous prime is 53215373. The next prime is 53215403. The reversal of 53215390 is 9351235.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71641 + ... + 72379.

It is an arithmetic number, because the mean of its divisors is an integer number (3163500).

Almost surely, 2^53215390 is an apocalyptic number.

53215390 is a deficient number, since it is larger than the sum of its proper divisors (48016610).

53215390 is a wasteful number, since it uses less digits than its factorization.

53215390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 53215390 is about 7294.8879360824. The cubic root of 53215390 is about 376.1367344481.

The spelling of 53215390 in words is "fifty-three million, two hundred fifteen thousand, three hundred ninety".