55091829 has 16 divisors (see below), whose sum is σ = 79927232. Its totient is φ = 33550848.

The previous prime is 55091809. The next prime is 55091843. The reversal of 55091829 is 92819055.

It is not a de Polignac number, because 55091829 - 2²¹ = 52994677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55091809) 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, 3499 + ... + 11064.

It is an arithmetic number, because the mean of its divisors is an integer number (4995452).

Almost surely, 2^55091829 is an apocalyptic number.

It is an amenable number.

55091829 is a deficient number, since it is larger than the sum of its proper divisors (24835403).

55091829 is a wasteful number, since it uses less digits than its factorization.

55091829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14676.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 55091829 is about 7422.3870149703. The cubic root of 55091829 is about 380.5067776799.

The spelling of 55091829 in words is "fifty-five million, ninety-one thousand, eight hundred twenty-nine".