52140323551 has 8 divisors (see below), whose sum is σ = 53879740544. Its totient is φ = 50404498560.

The previous prime is 52140323533. The next prime is 52140323567. The reversal of 52140323551 is 15532304125.

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

It is a cyclic number.

It is not a de Polignac number, because 52140323551 - 2⁵ = 52140323519 is a prime.

It is a super-2 number, since 2×52140323551² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52140323591) 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, 868470 + ... + 926563.

It is an arithmetic number, because the mean of its divisors is an integer number (6734967568).

Almost surely, 2^52140323551 is an apocalyptic number.

52140323551 is a deficient number, since it is larger than the sum of its proper divisors (1739416993).

52140323551 is a wasteful number, since it uses less digits than its factorization.

52140323551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796001.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 52140323551 its reverse (15532304125), we get a palindrome (67672627676).

The spelling of 52140323551 in words is "fifty-two billion, one hundred forty million, three hundred twenty-three thousand, five hundred fifty-one".