55259371 has 4 divisors (see below), whose sum is σ = 56037744. Its totient is φ = 54481000.

The previous prime is 55259287. The next prime is 55259381. The reversal of 55259371 is 17395255.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17395255 = 5 ⋅3479051.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55259371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55259371.

It is not an unprimeable number, because it can be changed into a prime (55259381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389080 + ... + 389221.

It is an arithmetic number, because the mean of its divisors is an integer number (14009436).

Almost surely, 2^55259371 is an apocalyptic number.

55259371 is a deficient number, since it is larger than the sum of its proper divisors (778373).

55259371 is an equidigital number, since it uses as much as digits as its factorization.

55259371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778372.

The product of its digits is 47250, while the sum is 37.

The square root of 55259371 is about 7433.6647086077. The cubic root of 55259371 is about 380.8921121995.

The spelling of 55259371 in words is "fifty-five million, two hundred fifty-nine thousand, three hundred seventy-one".