53449390 has 16 divisors (see below), whose sum is σ = 96402960. Its totient is φ = 21336640.

The previous prime is 53449379. The next prime is 53449391. The reversal of 53449390 is 9394435.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53449391) 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, 81 + ... + 10339.

It is an arithmetic number, because the mean of its divisors is an integer number (6025185).

Almost surely, 2^53449390 is an apocalyptic number.

53449390 is a deficient number, since it is larger than the sum of its proper divisors (42953570).

53449390 is a wasteful number, since it uses less digits than its factorization.

53449390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10787.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 53449390 is about 7310.9089722141. The cubic root of 53449390 is about 376.6872475071.

The spelling of 53449390 in words is "fifty-three million, four hundred forty-nine thousand, three hundred ninety".