55290790 has 8 divisors (see below), whose sum is σ = 99523440. Its totient is φ = 22116312.

The previous prime is 55290769. The next prime is 55290793. The reversal of 55290790 is 9709255.

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 (55290793) 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, 2764530 + ... + 2764549.

It is an arithmetic number, because the mean of its divisors is an integer number (12440430).

Almost surely, 2^55290790 is an apocalyptic number.

55290790 is a deficient number, since it is larger than the sum of its proper divisors (44232650).

55290790 is a wasteful number, since it uses less digits than its factorization.

55290790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5529086.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 55290790 is about 7435.7776997433. Note that the first 3 decimals coincide. The cubic root of 55290790 is about 380.9642868774.

The spelling of 55290790 in words is "fifty-five million, two hundred ninety thousand, seven hundred ninety".