53890281 has 9 divisors (see below), whose sum is σ = 77873341. Its totient is φ = 35912172.

The previous prime is 53890259. The next prime is 53890283. The reversal of 53890281 is 18209835.

The square root of 53890281 is 7341.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 53890281 - 2¹³ = 53882089 is a prime.

It is a super-2 number, since 2×53890281² = 5808324772517922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53890283) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20800 + ... + 23246.

Almost surely, 2^53890281 is an apocalyptic number.

53890281 is the 7341-st square number.

53890281 is the 3671-st centered octagonal number.

It is an amenable number.

53890281 is a deficient number, since it is larger than the sum of its proper divisors (23983060).

53890281 is an frugal number, since it uses more digits than its factorization.

53890281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4900 (or 2450 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The cubic root of 53890281 is about 377.7201464341.

Multiplying 53890281 by its sum of digits (36), we get a square (1940050116 = 44046²).

The spelling of 53890281 in words is "fifty-three million, eight hundred ninety thousand, two hundred eighty-one".