55421262 has 48 divisors (see below), whose sum is σ = 133791840. Its totient is φ = 16462656.

The previous prime is 55421257. The next prime is 55421269. The reversal of 55421262 is 26212455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55421269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2703 + ... + 10869.

It is an arithmetic number, because the mean of its divisors is an integer number (2787330).

Almost surely, 2^55421262 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55421262, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66895920).

55421262 is an abundant number, since it is smaller than the sum of its proper divisors (78370578).

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

55421262 is a wasteful number, since it uses less digits than its factorization.

55421262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8217 (or 8214 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 55421262 is about 7444.5457886966. The cubic root of 55421262 is about 381.2637106240.

The spelling of 55421262 in words is "fifty-five million, four hundred twenty-one thousand, two hundred sixty-two".