523140551 has 8 divisors (see below), whose sum is σ = 532593360. Its totient is φ = 513707392.

The previous prime is 523140523. The next prime is 523140571. The reversal of 523140551 is 155041325.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523140551 is a prime.

It is a super-2 number, since 2×523140551² = 547352072201167202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 523140551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523140511) 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, 55391 + ... + 64143.

It is an arithmetic number, because the mean of its divisors is an integer number (66574170).

Almost surely, 2^523140551 is an apocalyptic number.

523140551 is a deficient number, since it is larger than the sum of its proper divisors (9452809).

523140551 is a wasteful number, since it uses less digits than its factorization.

523140551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9825.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 523140551 is about 22872.2659786913. The cubic root of 523140551 is about 805.7607873995.

Adding to 523140551 its reverse (155041325), we get a palindrome (678181876).

The spelling of 523140551 in words is "five hundred twenty-three million, one hundred forty thousand, five hundred fifty-one".