53211403 has 12 divisors (see below), whose sum is σ = 62023752. Its totient is φ = 45517920.

The previous prime is 53211391. The next prime is 53211413. The reversal of 53211403 is 30411235.

It is not a de Polignac number, because 53211403 - 2⁵ = 53211371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53211413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36576 + ... + 38002.

It is an arithmetic number, because the mean of its divisors is an integer number (5168646).

Almost surely, 2^53211403 is an apocalyptic number.

53211403 is a deficient number, since it is larger than the sum of its proper divisors (8812349).

53211403 is a wasteful number, since it uses less digits than its factorization.

53211403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202 (or 2195 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 53211403 is about 7294.6146574031. The cubic root of 53211403 is about 376.1273405828.

Adding to 53211403 its reverse (30411235), we get a palindrome (83622638).

It can be divided in two parts, 5321 and 1403, that added together give a square (6724 = 82²).

The spelling of 53211403 in words is "fifty-three million, two hundred eleven thousand, four hundred three".