55820346 has 16 divisors (see below), whose sum is σ = 114658464. Its totient is φ = 18103824.

The previous prime is 55820329. The next prime is 55820357. The reversal of 55820346 is 64302855.

It is a super-2 number, since 2×55820346² = 6231822055119432, which contains 22 as substring.

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, 125500 + ... + 125943.

It is an arithmetic number, because the mean of its divisors is an integer number (7166154).

Almost surely, 2^55820346 is an apocalyptic number.

55820346 is an abundant number, since it is smaller than the sum of its proper divisors (58838118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55820346 is a wasteful number, since it uses less digits than its factorization.

55820346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251485.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 55820346 is about 7471.3014930466. The cubic root of 55820346 is about 382.1766723871.

The spelling of 55820346 in words is "fifty-five million, eight hundred twenty thousand, three hundred forty-six".