54260021 has 4 divisors (see below), whose sum is σ = 54767232. Its totient is φ = 53752812.

The previous prime is 54259987. The next prime is 54260027. The reversal of 54260021 is 12006245.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54260021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54259975 and 54260002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54260027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253445 + ... + 253658.

It is an arithmetic number, because the mean of its divisors is an integer number (13691808).

Almost surely, 2^54260021 is an apocalyptic number.

It is an amenable number.

54260021 is a deficient number, since it is larger than the sum of its proper divisors (507211).

54260021 is a wasteful number, since it uses less digits than its factorization.

54260021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507210.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 54260021 is about 7366.1401697225. The cubic root of 54260021 is about 378.5820214568.

Adding to 54260021 its reverse (12006245), we get a palindrome (66266266).

The spelling of 54260021 in words is "fifty-four million, two hundred sixty thousand, twenty-one".