55401456 has 80 divisors (see below), whose sum is σ = 157097088. Its totient is φ = 16684800.

The previous prime is 55401449. The next prime is 55401499. The reversal of 55401456 is 65410455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167211 + ... + 167541.

Almost surely, 2^55401456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55401456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78548544).

55401456 is an abundant number, since it is smaller than the sum of its proper divisors (101695632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55401456 is a wasteful number, since it uses less digits than its factorization.

55401456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 55401456 is about 7443.2154342058. The cubic root of 55401456 is about 381.2182875710.

It can be divided in two parts, 5540 and 1456, that added together give a palindrome (6996).

The spelling of 55401456 in words is "fifty-five million, four hundred one thousand, four hundred fifty-six".