53373737 has 4 divisors (see below), whose sum is σ = 53732100. Its totient is φ = 53015376.

The previous prime is 53373709. The next prime is 53373751. The reversal of 53373737 is 73737335.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2835856 + 50537881 = 1684^2 + 7109^2 .

It is a cyclic number.

It is not a de Polignac number, because 53373737 - 2¹⁰ = 53372713 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 53373737.

It is not an unprimeable number, because it can be changed into a prime (53373757) 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, 178958 + ... + 179255.

It is an arithmetic number, because the mean of its divisors is an integer number (13433025).

Almost surely, 2^53373737 is an apocalyptic number.

It is an amenable number.

53373737 is a deficient number, since it is larger than the sum of its proper divisors (358363).

53373737 is a wasteful number, since it uses less digits than its factorization.

53373737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358362.

The product of its digits is 138915, while the sum is 38.

The square root of 53373737 is about 7305.7331596493. The cubic root of 53373737 is about 376.5094408245.

The spelling of 53373737 in words is "fifty-three million, three hundred seventy-three thousand, seven hundred thirty-seven".