55207646 has 16 divisors (see below), whose sum is σ = 89498304. Its totient is φ = 25389984.

The previous prime is 55207639. The next prime is 55207681. The reversal of 55207646 is 64670255.

It is a super-2 number, since 2×55207646² = 6095768353722632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3995 + ... + 11241.

It is an arithmetic number, because the mean of its divisors is an integer number (5593644).

Almost surely, 2^55207646 is an apocalyptic number.

55207646 is a deficient number, since it is larger than the sum of its proper divisors (34290658).

55207646 is a wasteful number, since it uses less digits than its factorization.

55207646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 55207646 is about 7430.1847890884. The cubic root of 55207646 is about 380.7732316397.

The spelling of 55207646 in words is "fifty-five million, two hundred seven thousand, six hundred forty-six".