55539790 has 8 divisors (see below), whose sum is σ = 99971640. Its totient is φ = 22215912.

The previous prime is 55539773. The next prime is 55539791. The reversal of 55539790 is 9793555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55539791) 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, 2776980 + ... + 2776999.

It is an arithmetic number, because the mean of its divisors is an integer number (12496455).

Almost surely, 2^55539790 is an apocalyptic number.

55539790 is a deficient number, since it is larger than the sum of its proper divisors (44431850).

55539790 is a wasteful number, since it uses less digits than its factorization.

55539790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553986.

The product of its (nonzero) digits is 212625, while the sum is 43.

The square root of 55539790 is about 7452.5022643405. The cubic root of 55539790 is about 381.5353166577.

The spelling of 55539790 in words is "fifty-five million, five hundred thirty-nine thousand, seven hundred ninety".