55949994 has 64 divisors (see below), whose sum is σ = 130999680. Its totient is φ = 17677440.

The previous prime is 55949987. The next prime is 55950001. The reversal of 55949994 is 49994955.

55949994 = T₁₂ + T₁₃ + ... + T₆₉₄.

It is an interprime number because it is at equal distance from previous prime (55949987) and next prime (55950001).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 55949994.

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, 81577 + ... + 82259.

It is an arithmetic number, because the mean of its divisors is an integer number (2046870).

Almost surely, 2^55949994 is an apocalyptic number.

55949994 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55949994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65499840).

55949994 is an abundant number, since it is smaller than the sum of its proper divisors (75049686).

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

55949994 is a wasteful number, since it uses less digits than its factorization.

55949994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772 (or 766 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 54.

The square root of 55949994 is about 7479.9728609133. The cubic root of 55949994 is about 382.4723240260.

The spelling of 55949994 in words is "fifty-five million, nine hundred forty-nine thousand, nine hundred ninety-four".