53398406 has 4 divisors (see below), whose sum is σ = 80097612. Its totient is φ = 26699202.

The previous prime is 53398361. The next prime is 53398409. The reversal of 53398406 is 60489335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60489335 = 5 ⋅12097867.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53398406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53398409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13349600 + ... + 13349603.

It is an arithmetic number, because the mean of its divisors is an integer number (20024403).

Almost surely, 2^53398406 is an apocalyptic number.

53398406 is a deficient number, since it is larger than the sum of its proper divisors (26699206).

53398406 is a wasteful number, since it uses less digits than its factorization.

53398406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26699205.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 53398406 is about 7307.4212961892. The cubic root of 53398406 is about 376.5674386421.

The spelling of 53398406 in words is "fifty-three million, three hundred ninety-eight thousand, four hundred six".