512361091 has 4 divisors (see below), whose sum is σ = 558939384. Its totient is φ = 465782800.

The previous prime is 512361071. The next prime is 512361103. The reversal of 512361091 is 190163215.

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

It is a cyclic number.

It is not a de Polignac number, because 512361091 - 2⁹ = 512360579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512361061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23289130 + ... + 23289151.

It is an arithmetic number, because the mean of its divisors is an integer number (139734846).

Almost surely, 2^512361091 is an apocalyptic number.

512361091 is a deficient number, since it is larger than the sum of its proper divisors (46578293).

512361091 is a wasteful number, since it uses less digits than its factorization.

512361091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46578292.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 512361091 is about 22635.3946508560. The cubic root of 512361091 is about 800.1880240344.

The spelling of 512361091 in words is "five hundred twelve million, three hundred sixty-one thousand, ninety-one".