53321545 has 8 divisors (see below), whose sum is σ = 65070720. Its totient is φ = 41934000.

The previous prime is 53321533. The next prime is 53321549. The reversal of 53321545 is 54512335.

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

It is not a de Polignac number, because 53321545 - 2¹⁵ = 53288777 is a prime.

It is a super-2 number, since 2×53321545² = 5686374322374050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53321549) 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, 90081 + ... + 90670.

It is an arithmetic number, because the mean of its divisors is an integer number (8133840).

Almost surely, 2^53321545 is an apocalyptic number.

It is an amenable number.

53321545 is a deficient number, since it is larger than the sum of its proper divisors (11749175).

53321545 is a wasteful number, since it uses less digits than its factorization.

53321545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180815.

The product of its digits is 9000, while the sum is 28.

The square root of 53321545 is about 7302.1602967889. The cubic root of 53321545 is about 376.3866763929.

The spelling of 53321545 in words is "fifty-three million, three hundred twenty-one thousand, five hundred forty-five".