53455290 has 64 divisors (see below), whose sum is σ = 147204864. Its totient is φ = 12169728.

The previous prime is 53455279. The next prime is 53455291. The reversal of 53455290 is 9255435.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53455291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95692 + ... + 96248.

It is an arithmetic number, because the mean of its divisors is an integer number (2300076).

Almost surely, 2^53455290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53455290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73602432).

53455290 is an abundant number, since it is smaller than the sum of its proper divisors (93749574).

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

53455290 is a wasteful number, since it uses less digits than its factorization.

53455290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 53455290 is about 7311.3124676764. The cubic root of 53455290 is about 376.7011071788.

The spelling of 53455290 in words is "fifty-three million, four hundred fifty-five thousand, two hundred ninety".