53211345 has 64 divisors (see below), whose sum is σ = 97763328. Its totient is φ = 24480000.

The previous prime is 53211329. The next prime is 53211371. The reversal of 53211345 is 54311235.

It is not a de Polignac number, because 53211345 - 2⁴ = 53211329 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 516564 + ... + 516666.

It is an arithmetic number, because the mean of its divisors is an integer number (1527552).

Almost surely, 2^53211345 is an apocalyptic number.

53211345 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53211345 is a deficient number, since it is larger than the sum of its proper divisors (44551983).

53211345 is a wasteful number, since it uses less digits than its factorization.

53211345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254.

The product of its digits is 1800, while the sum is 24.

The square root of 53211345 is about 7294.6106818664. The cubic root of 53211345 is about 376.1272039242.

It can be divided in two parts, 5321 and 1345, that added together give a palindrome (6666).

The spelling of 53211345 in words is "fifty-three million, two hundred eleven thousand, three hundred forty-five".