55420310 has 16 divisors (see below), whose sum is σ = 108825552. Its totient is φ = 20152800.

The previous prime is 55420301. The next prime is 55420327. The reversal of 55420310 is 1302455.

It is a super-2 number, since 2×55420310² = 6142821520992200, 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, 251801 + ... + 252020.

It is an arithmetic number, because the mean of its divisors is an integer number (6801597).

Almost surely, 2^55420310 is an apocalyptic number.

55420310 is a deficient number, since it is larger than the sum of its proper divisors (53405242).

55420310 is a wasteful number, since it uses less digits than its factorization.

55420310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503839.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 55420310 is about 7444.4818489939. The cubic root of 55420310 is about 381.2615275561.

Adding to 55420310 its reverse (1302455), we get a palindrome (56722765).

The spelling of 55420310 in words is "fifty-five million, four hundred twenty thousand, three hundred ten".