55290707 has 4 divisors (see below), whose sum is σ = 55322736. Its totient is φ = 55258680.

The previous prime is 55290661. The next prime is 55290731. The reversal of 55290707 is 70709255.

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

It is a cyclic number.

It is not a de Polignac number, because 55290707 - 2⁸ = 55290451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55290797) 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, 13268 + ... + 16929.

It is an arithmetic number, because the mean of its divisors is an integer number (13830684).

Almost surely, 2^55290707 is an apocalyptic number.

55290707 is a deficient number, since it is larger than the sum of its proper divisors (32029).

55290707 is a wasteful number, since it uses less digits than its factorization.

55290707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32028.

The product of its (nonzero) digits is 22050, while the sum is 35.

The square root of 55290707 is about 7435.7721186169. The cubic root of 55290707 is about 380.9640962486.

The spelling of 55290707 in words is "fifty-five million, two hundred ninety thousand, seven hundred seven".