53444207 has 4 divisors (see below), whose sum is σ = 56257080. Its totient is φ = 50631336.

The previous prime is 53444189. The next prime is 53444219. The reversal of 53444207 is 70244435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70244435 = 5 ⋅14048887.

It is a cyclic number.

It is not a de Polignac number, because 53444207 - 2⁶ = 53444143 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 53444207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53444257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1406408 + ... + 1406445.

It is an arithmetic number, because the mean of its divisors is an integer number (14064270).

Almost surely, 2^53444207 is an apocalyptic number.

53444207 is a deficient number, since it is larger than the sum of its proper divisors (2812873).

53444207 is a wasteful number, since it uses less digits than its factorization.

53444207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812872.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 53444207 is about 7310.5544933336. The cubic root of 53444207 is about 376.6750712964.

The spelling of 53444207 in words is "fifty-three million, four hundred forty-four thousand, two hundred seven".