52407145481 has 4 divisors (see below), whose sum is σ = 52413814992. Its totient is φ = 52400475972.

The previous prime is 52407145451. The next prime is 52407145493. The reversal of 52407145481 is 18454170425.

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-52407145481 is a prime.

It is a super-2 number, since 2×52407145481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52407145421) 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, 3322955 + ... + 3338688.

It is an arithmetic number, because the mean of its divisors is an integer number (13103453748).

Almost surely, 2^52407145481 is an apocalyptic number.

It is an amenable number.

52407145481 is a deficient number, since it is larger than the sum of its proper divisors (6669511).

52407145481 is an equidigital number, since it uses as much as digits as its factorization.

52407145481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669510.

The product of its (nonzero) digits is 179200, while the sum is 41.

The spelling of 52407145481 in words is "fifty-two billion, four hundred seven million, one hundred forty-five thousand, four hundred eighty-one".