55622401 has 4 divisors (see below), whose sum is σ = 57416704. Its totient is φ = 53828100.

The previous prime is 55622389. The next prime is 55622429. The reversal of 55622401 is 10422655.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10422655 = 5 ⋅2084531.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55622401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55622461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 897105 + ... + 897166.

It is an arithmetic number, because the mean of its divisors is an integer number (14354176).

Almost surely, 2^55622401 is an apocalyptic number.

It is an amenable number.

55622401 is a deficient number, since it is larger than the sum of its proper divisors (1794303).

55622401 is a wasteful number, since it uses less digits than its factorization.

55622401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794302.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 55622401 is about 7458.0427056970. The cubic root of 55622401 is about 381.7243907107.

The spelling of 55622401 in words is "fifty-five million, six hundred twenty-two thousand, four hundred one".