55019293 has 32 divisors (see below), whose sum is σ = 69984000. Its totient is φ = 42169344.

The previous prime is 55019291. The next prime is 55019299. The reversal of 55019293 is 39291055.

It is a happy number.

It is not a de Polignac number, because 55019293 - 2¹ = 55019291 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55019291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369183 + ... + 369331.

It is an arithmetic number, because the mean of its divisors is an integer number (2187000).

Almost surely, 2^55019293 is an apocalyptic number.

It is an amenable number.

55019293 is a deficient number, since it is larger than the sum of its proper divisors (14964707).

55019293 is a wasteful number, since it uses less digits than its factorization.

55019293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 55019293 is about 7417.4991068419. The cubic root of 55019293 is about 380.3397077637.

The spelling of 55019293 in words is "fifty-five million, nineteen thousand, two hundred ninety-three".