52451097509 has 4 divisors (see below), whose sum is σ = 55536456204. Its totient is φ = 49365738816.

The previous prime is 52451097469. The next prime is 52451097551. The reversal of 52451097509 is 90579015425.

52451097509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40808040100 + 11643057409 = 202010^2 + 107903^2 .

It is a cyclic number.

It is not a de Polignac number, because 52451097509 - 2¹² = 52451093413 is a prime.

It is a super-2 number, since 2×52451097509² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52451597509) 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, 1542679322 + ... + 1542679355.

It is an arithmetic number, because the mean of its divisors is an integer number (13884114051).

Almost surely, 2^52451097509 is an apocalyptic number.

It is an amenable number.

52451097509 is a deficient number, since it is larger than the sum of its proper divisors (3085358695).

52451097509 is a wasteful number, since it uses less digits than its factorization.

52451097509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3085358694.

The product of its (nonzero) digits is 567000, while the sum is 47.

The spelling of 52451097509 in words is "fifty-two billion, four hundred fifty-one million, ninety-seven thousand, five hundred nine".