55949599 has 4 divisors (see below), whose sum is σ = 57140064. Its totient is φ = 54759136.

The previous prime is 55949581. The next prime is 55949603. The reversal of 55949599 is 99594955.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55949599 - 2¹⁹ = 55425311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55949539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595162 + ... + 595255.

It is an arithmetic number, because the mean of its divisors is an integer number (14285016).

Almost surely, 2^55949599 is an apocalyptic number.

55949599 is a deficient number, since it is larger than the sum of its proper divisors (1190465).

55949599 is a wasteful number, since it uses less digits than its factorization.

55949599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190464.

The product of its digits is 3280500, while the sum is 55.

The square root of 55949599 is about 7479.9464570276. The cubic root of 55949599 is about 382.4714239549.

The spelling of 55949599 in words is "fifty-five million, nine hundred forty-nine thousand, five hundred ninety-nine".