55259358 has 64 divisors (see below), whose sum is σ = 140659200. Its totient is φ = 14347200.

The previous prime is 55259287. The next prime is 55259381. The reversal of 55259358 is 85395255.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21418 + ... + 23858.

It is an arithmetic number, because the mean of its divisors is an integer number (2197800).

Almost surely, 2^55259358 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55259358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70329600).

55259358 is an abundant number, since it is smaller than the sum of its proper divisors (85399842).

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

55259358 is a wasteful number, since it uses less digits than its factorization.

55259358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478 (or 2464 counting only the distinct ones).

The product of its digits is 270000, while the sum is 42.

The square root of 55259358 is about 7433.6638342072. The cubic root of 55259358 is about 380.8920823307.

The spelling of 55259358 in words is "fifty-five million, two hundred fifty-nine thousand, three hundred fifty-eight".