523154540 has 12 divisors (see below), whose sum is σ = 1098624576. Its totient is φ = 209261808.

The previous prime is 523154521. The next prime is 523154591. The reversal of 523154540 is 45451325.

It is a super-2 number, since 2×523154540² = 547381345445223200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13078844 + ... + 13078883.

It is an arithmetic number, because the mean of its divisors is an integer number (91552048).

Almost surely, 2^523154540 is an apocalyptic number.

It is an amenable number.

523154540 is an abundant number, since it is smaller than the sum of its proper divisors (575470036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523154540 is a wasteful number, since it uses less digits than its factorization.

523154540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26157736 (or 26157734 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 523154540 is about 22872.5717836889. The cubic root of 523154540 is about 805.7679694638.

The spelling of 523154540 in words is "five hundred twenty-three million, one hundred fifty-four thousand, five hundred forty".