55481901 has 8 divisors (see below), whose sum is σ = 76526880. Its totient is φ = 35712432.

The previous prime is 55481893. The next prime is 55481927. The reversal of 55481901 is 10918455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55481901 - 2³ = 55481893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55481801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318775 + ... + 318948.

It is an arithmetic number, because the mean of its divisors is an integer number (9565860).

Almost surely, 2^55481901 is an apocalyptic number.

It is an amenable number.

55481901 is a deficient number, since it is larger than the sum of its proper divisors (21044979).

55481901 is a wasteful number, since it uses less digits than its factorization.

55481901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637755.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 55481901 is about 7448.6173884822. The cubic root of 55481901 is about 381.4027127712.

The spelling of 55481901 in words is "fifty-five million, four hundred eighty-one thousand, nine hundred one".