55415850 has 96 divisors (see below), whose sum is σ = 159096960. Its totient is φ = 12503040.

The previous prime is 55415849. The next prime is 55415851. The reversal of 55415850 is 5851455.

It is an interprime number because it is at equal distance from previous prime (55415849) and next prime (55415851).

It is not an unprimeable number, because it can be changed into a prime (55415851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93154 + ... + 93746.

It is an arithmetic number, because the mean of its divisors is an integer number (1657260).

Almost surely, 2^55415850 is an apocalyptic number.

55415850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55415850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79548480).

55415850 is an abundant number, since it is smaller than the sum of its proper divisors (103681110).

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

55415850 is a wasteful number, since it uses less digits than its factorization.

55415850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

The square root of 55415850 is about 7444.1822922333. The cubic root of 55415850 is about 381.2512998254.

It can be divided in two parts, 55415 and 850, that added together give a palindrome (56265).

The spelling of 55415850 in words is "fifty-five million, four hundred fifteen thousand, eight hundred fifty".