55581351 has 16 divisors (see below), whose sum is σ = 84902400. Its totient is φ = 31683168.

The previous prime is 55581349. The next prime is 55581467. The reversal of 55581351 is 15318555.

It is not a de Polignac number, because 55581351 - 2¹ = 55581349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55586351) 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, 6205 + ... + 12233.

It is an arithmetic number, because the mean of its divisors is an integer number (5306400).

Almost surely, 2^55581351 is an apocalyptic number.

55581351 is a deficient number, since it is larger than the sum of its proper divisors (29321049).

55581351 is a wasteful number, since it uses less digits than its factorization.

55581351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6478.

The product of its digits is 15000, while the sum is 33.

The square root of 55581351 is about 7455.2901351993. The cubic root of 55581351 is about 381.6304618717.

The spelling of 55581351 in words is "fifty-five million, five hundred eighty-one thousand, three hundred fifty-one".