55858236 has 96 divisors (see below), whose sum is σ = 156172800. Its totient is φ = 15523200.

The previous prime is 55858223. The next prime is 55858259. The reversal of 55858236 is 63285855.

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

Its product of digits (288000) is a multiple of the sum of its prime divisors (384).

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, 168591 + ... + 168921.

It is an arithmetic number, because the mean of its divisors is an integer number (1626800).

Almost surely, 2^55858236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55858236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78086400).

55858236 is an abundant number, since it is smaller than the sum of its proper divisors (100314564).

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

55858236 is a wasteful number, since it uses less digits than its factorization.

55858236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 384 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The square root of 55858236 is about 7473.8367656780. The cubic root of 55858236 is about 382.2631247291.

The spelling of 55858236 in words is "fifty-five million, eight hundred fifty-eight thousand, two hundred thirty-six".