55420430 has 16 divisors (see below), whose sum is σ = 107430624. Its totient is φ = 20462880.

The previous prime is 55420427. The next prime is 55420433. The reversal of 55420430 is 3402455.

55420430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55420427) and next prime (55420433).

It is a super-2 number, since 2×55420430² = 6142848122769800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55420396 and 55420405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55420433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213026 + ... + 213285.

It is an arithmetic number, because the mean of its divisors is an integer number (6714414).

Almost surely, 2^55420430 is an apocalyptic number.

55420430 is a deficient number, since it is larger than the sum of its proper divisors (52010194).

55420430 is a wasteful number, since it uses less digits than its factorization.

55420430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426331.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 55420430 is about 7444.4899086506. The cubic root of 55420430 is about 381.2618027341.

Adding to 55420430 its reverse (3402455), we get a palindrome (58822885).

The spelling of 55420430 in words is "fifty-five million, four hundred twenty thousand, four hundred thirty".