53380845 has 72 divisors (see below), whose sum is σ = 110331936. Its totient is φ = 23792832.

The previous prime is 53380841. The next prime is 53380849. The reversal of 53380845 is 54808335.

53380845 is a `hidden beast` number, since 533 + 80 + 8 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (53380841) and next prime (53380849).

It is not a de Polignac number, because 53380845 - 2² = 53380841 is a prime.

It is a super-2 number, since 2×53380845² = 5699029225828050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53380841) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 94534 + ... + 95096.

It is an arithmetic number, because the mean of its divisors is an integer number (1532388).

Almost surely, 2^53380845 is an apocalyptic number.

It is an amenable number.

53380845 is an abundant number, since it is smaller than the sum of its proper divisors (56951091).

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

53380845 is a wasteful number, since it uses less digits than its factorization.

53380845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 53380845 is about 7306.2196107152. The cubic root of 53380845 is about 376.5261538526.

The spelling of 53380845 in words is "fifty-three million, three hundred eighty thousand, eight hundred forty-five".