53330403 has 8 divisors (see below), whose sum is σ = 81265408. Its totient is φ = 30474504.

The previous prime is 53330317. The next prime is 53330419. The reversal of 53330403 is 30403335.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53330403 - 2¹² = 53326307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2539543 = 53330403 / (5 + 3 + 3 + 3 + 0 + 4 + 0 + 3).

It is a self number, because there is not a number n which added to its sum of digits gives 53330403.

It is not an unprimeable number, because it can be changed into a prime (53330483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1269751 + ... + 1269792.

It is an arithmetic number, because the mean of its divisors is an integer number (10158176).

Almost surely, 2^53330403 is an apocalyptic number.

53330403 is a deficient number, since it is larger than the sum of its proper divisors (27935005).

53330403 is a wasteful number, since it uses less digits than its factorization.

53330403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539553.

The product of its (nonzero) digits is 1620, while the sum is 21.

The square root of 53330403 is about 7302.7668044379. The cubic root of 53330403 is about 376.4075175530.

Adding to 53330403 its reverse (30403335), we get a palindrome (83733738).

The spelling of 53330403 in words is "fifty-three million, three hundred thirty thousand, four hundred three".