55423401 has 16 divisors (see below), whose sum is σ = 80766720. Its totient is φ = 33527120.

The previous prime is 55423369. The next prime is 55423411. The reversal of 55423401 is 10432455.

It is not a de Polignac number, because 55423401 - 2⁵ = 55423369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55423411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21310 + ... + 23768.

It is an arithmetic number, because the mean of its divisors is an integer number (5047920).

Almost surely, 2^55423401 is an apocalyptic number.

It is an amenable number.

55423401 is a deficient number, since it is larger than the sum of its proper divisors (25343319).

55423401 is a wasteful number, since it uses less digits than its factorization.

55423401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 55423401 is about 7444.6894495338. The cubic root of 55423401 is about 381.2686155561.

Adding to 55423401 its reverse (10432455), we get a palindrome (65855856).

The spelling of 55423401 in words is "fifty-five million, four hundred twenty-three thousand, four hundred one".