53145215333 has 4 divisors (see below), whose sum is σ = 60737388960. Its totient is φ = 45553041708.

The previous prime is 53145215303. The next prime is 53145215371. The reversal of 53145215333 is 33351254135.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53145215333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53145215293 and 53145215302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53145215303) 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, 3796086803 + ... + 3796086816.

It is an arithmetic number, because the mean of its divisors is an integer number (15184347240).

Almost surely, 2^53145215333 is an apocalyptic number.

It is an amenable number.

53145215333 is a deficient number, since it is larger than the sum of its proper divisors (7592173627).

53145215333 is an equidigital number, since it uses as much as digits as its factorization.

53145215333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7592173626.

The product of its digits is 81000, while the sum is 35.

Adding to 53145215333 its reverse (33351254135), we get a palindrome (86496469468).

The spelling of 53145215333 in words is "fifty-three billion, one hundred forty-five million, two hundred fifteen thousand, three hundred thirty-three".