55037791 has 4 divisors (see below), whose sum is σ = 55054552. Its totient is φ = 55021032.

The previous prime is 55037783. The next prime is 55037809. The reversal of 55037791 is 19773055.

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: 19773055 = 5 ⋅3954611.

It is a cyclic number.

It is not a de Polignac number, because 55037791 - 2³ = 55037783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55037791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55037711) 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, 1656 + ... + 10621.

It is an arithmetic number, because the mean of its divisors is an integer number (13763638).

Almost surely, 2^55037791 is an apocalyptic number.

55037791 is a deficient number, since it is larger than the sum of its proper divisors (16761).

55037791 is a wasteful number, since it uses less digits than its factorization.

55037791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16760.

The product of its (nonzero) digits is 33075, while the sum is 37.

The square root of 55037791 is about 7418.7459182803. The cubic root of 55037791 is about 380.3823275746.

The spelling of 55037791 in words is "fifty-five million, thirty-seven thousand, seven hundred ninety-one".