55401043 has 4 divisors (see below), whose sum is σ = 57809808. Its totient is φ = 52992280.

The previous prime is 55401029. The next prime is 55401053. The reversal of 55401043 is 34010455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55401043 - 2²⁵ = 21846611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55401053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204348 + ... + 1204393.

It is an arithmetic number, because the mean of its divisors is an integer number (14452452).

Almost surely, 2^55401043 is an apocalyptic number.

55401043 is a deficient number, since it is larger than the sum of its proper divisors (2408765).

55401043 is a wasteful number, since it uses less digits than its factorization.

55401043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408764.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55401043 is about 7443.1876907680. The cubic root of 55401043 is about 381.2173402821.

Adding to 55401043 its reverse (34010455), we get a palindrome (89411498).

The spelling of 55401043 in words is "fifty-five million, four hundred one thousand, forty-three".