55441551 has 16 divisors (see below), whose sum is σ = 82166400. Its totient is φ = 32965920.

The previous prime is 55441549. The next prime is 55441583. The reversal of 55441551 is 15514455.

It is not a de Polignac number, because 55441551 - 2¹ = 55441549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55441511) 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, 14101 + ... + 17598.

It is an arithmetic number, because the mean of its divisors is an integer number (5135400).

Almost surely, 2^55441551 is an apocalyptic number.

55441551 is a deficient number, since it is larger than the sum of its proper divisors (26724849).

55441551 is a wasteful number, since it uses less digits than its factorization.

55441551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31766.

The product of its digits is 10000, while the sum is 30.

The square root of 55441551 is about 7445.9083394842. The cubic root of 55441551 is about 381.3102301690.

The spelling of 55441551 in words is "fifty-five million, four hundred forty-one thousand, five hundred fifty-one".