53772293 has 16 divisors (see below), whose sum is σ = 57250800. Its totient is φ = 50426880.

The previous prime is 53772281. The next prime is 53772307. The reversal of 53772293 is 39227735.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 31888609 + 21883684 = 5647^2 + 4678^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53772293 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 (53772203) 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, 199763 + ... + 200031.

It is an arithmetic number, because the mean of its divisors is an integer number (3578175).

Almost surely, 2^53772293 is an apocalyptic number.

It is an amenable number.

53772293 is a deficient number, since it is larger than the sum of its proper divisors (3478507).

53772293 is a wasteful number, since it uses less digits than its factorization.

53772293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472.

The product of its digits is 79380, while the sum is 38.

The square root of 53772293 is about 7332.9593616766. The cubic root of 53772293 is about 377.4442834016. Note that the first 3 decimals are identical.

The spelling of 53772293 in words is "fifty-three million, seven hundred seventy-two thousand, two hundred ninety-three".