53872403 has 4 divisors (see below), whose sum is σ = 58016448. Its totient is φ = 49728360.

The previous prime is 53872393. The next prime is 53872409. The reversal of 53872403 is 30427835.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 53872403 - 2⁶ = 53872339 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 53872403.

It is not an unprimeable number, because it can be changed into a prime (53872409) 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, 2072003 + ... + 2072028.

It is an arithmetic number, because the mean of its divisors is an integer number (14504112).

Almost surely, 2^53872403 is an apocalyptic number.

53872403 is a deficient number, since it is larger than the sum of its proper divisors (4144045).

53872403 is a wasteful number, since it uses less digits than its factorization.

53872403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4144044.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 53872403 is about 7339.7822174776. The cubic root of 53872403 is about 377.6783724968.

The spelling of 53872403 in words is "fifty-three million, eight hundred seventy-two thousand, four hundred three".