53451864 has 96 divisors (see below), whose sum is σ = 156265200. Its totient is φ = 16450560.

The previous prime is 53451847. The next prime is 53451877. The reversal of 53451864 is 46815435.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55612 + ... + 56564.

Almost surely, 2^53451864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53451864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78132600).

53451864 is an abundant number, since it is smaller than the sum of its proper divisors (102813336).

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

53451864 is a wasteful number, since it uses less digits than its factorization.

53451864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025 (or 1018 counting only the distinct ones).

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

The square root of 53451864 is about 7311.0781694631. The cubic root of 53451864 is about 376.6930592970.

The spelling of 53451864 in words is "fifty-three million, four hundred fifty-one thousand, eight hundred sixty-four".