53020111451 has 4 divisors (see below), whose sum is σ = 55325333712. Its totient is φ = 50714889192.

The previous prime is 53020111369. The next prime is 53020111457. The reversal of 53020111451 is 15411102035.

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 53020111451 - 2²² = 53015917147 is a prime.

It is a super-2 number, since 2×53020111451² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 2305222237 = 53020111451 / (5 + 3 + 0 + 2 + 0 + 1 + 1 + 1 + 4 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53020111457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152611096 + ... + 1152611141.

It is an arithmetic number, because the mean of its divisors is an integer number (13831333428).

Almost surely, 2^53020111451 is an apocalyptic number.

53020111451 is a deficient number, since it is larger than the sum of its proper divisors (2305222261).

53020111451 is a wasteful number, since it uses less digits than its factorization.

53020111451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305222260.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 53020111451 its reverse (15411102035), we get a palindrome (68431213486).

The spelling of 53020111451 in words is "fifty-three billion, twenty million, one hundred eleven thousand, four hundred fifty-one".