55422401 has 4 divisors (see below), whose sum is σ = 55547952. Its totient is φ = 55296852.

The previous prime is 55422379. The next prime is 55422407. The reversal of 55422401 is 10422455.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55422401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55422407) 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, 62111 + ... + 62996.

It is an arithmetic number, because the mean of its divisors is an integer number (13886988).

Almost surely, 2^55422401 is an apocalyptic number.

It is an amenable number.

55422401 is a deficient number, since it is larger than the sum of its proper divisors (125551).

55422401 is a wasteful number, since it uses less digits than its factorization.

55422401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125550.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 55422401 is about 7444.6222872621. The cubic root of 55422401 is about 381.2663224759.

Adding to 55422401 its reverse (10422455), we get a palindrome (65844856).

The spelling of 55422401 in words is "fifty-five million, four hundred twenty-two thousand, four hundred one".