53372287 has 4 divisors (see below), whose sum is σ = 53427136. Its totient is φ = 53317440.

The previous prime is 53372281. The next prime is 53372317. The reversal of 53372287 is 78227335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78227335 = 5 ⋅15645467.

It is a cyclic number.

It is not a de Polignac number, because 53372287 - 2³ = 53372279 is a prime.

It is a super-2 number, since 2×53372287² = 5697202039220738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53372281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25938 + ... + 27919.

It is an arithmetic number, because the mean of its divisors is an integer number (13356784).

Almost surely, 2^53372287 is an apocalyptic number.

53372287 is a deficient number, since it is larger than the sum of its proper divisors (54849).

53372287 is an equidigital number, since it uses as much as digits as its factorization.

53372287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54848.

The product of its digits is 70560, while the sum is 37.

The square root of 53372287 is about 7305.6339218442. The cubic root of 53372287 is about 376.5060312597.

The spelling of 53372287 in words is "fifty-three million, three hundred seventy-two thousand, two hundred eighty-seven".