55440305401 has 16 divisors (see below), whose sum is σ = 62020118160. Its totient is φ = 49205882880.

The previous prime is 55440305383. The next prime is 55440305423. The reversal of 55440305401 is 10450304455.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1255639225 + 54184666176 = 35435^2 + 232776^2 .

It is a cyclic number.

It is not a de Polignac number, because 55440305401 - 2⁹ = 55440304889 is a prime.

It is a super-2 number, since 2×55440305401² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55440305441) 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, 214240 + ... + 395953.

It is an arithmetic number, because the mean of its divisors is an integer number (3876257385).

Almost surely, 2^55440305401 is an apocalyptic number.

It is an amenable number.

55440305401 is a deficient number, since it is larger than the sum of its proper divisors (6579812759).

55440305401 is a wasteful number, since it uses less digits than its factorization.

55440305401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610476.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 55440305401 its reverse (10450304455), we get a palindrome (65890609856).

The spelling of 55440305401 in words is "fifty-five billion, four hundred forty million, three hundred five thousand, four hundred one".