55840310 has 16 divisors (see below), whose sum is σ = 101071152. Its totient is φ = 22212000.

The previous prime is 55840271. The next prime is 55840321. The reversal of 55840310 is 1304855.

It is a super-2 number, since 2×55840310² = 6236280441792200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55840310.

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, 13616 + ... + 17235.

It is an arithmetic number, because the mean of its divisors is an integer number (6316947).

Almost surely, 2^55840310 is an apocalyptic number.

55840310 is a deficient number, since it is larger than the sum of its proper divisors (45230842).

55840310 is a wasteful number, since it uses less digits than its factorization.

55840310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31039.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 55840310 is about 7472.6374192784. The cubic root of 55840310 is about 382.2222284506. Note that the first 5 decimals are identical.

The spelling of 55840310 in words is "fifty-five million, eight hundred forty thousand, three hundred ten".