520227491 has 16 divisors (see below), whose sum is σ = 616136640. Its totient is φ = 429770880.

The previous prime is 520227481. The next prime is 520227493. The reversal of 520227491 is 194722025.

It is not a de Polignac number, because 520227491 - 2²² = 516033187 is a prime.

It is a super-3 number, since 3×520227491³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (520227493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132245 + ... + 136121.

It is an arithmetic number, because the mean of its divisors is an integer number (38508540).

Almost surely, 2^520227491 is an apocalyptic number.

520227491 is a deficient number, since it is larger than the sum of its proper divisors (95909149).

520227491 is a wasteful number, since it uses less digits than its factorization.

520227491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4574.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 520227491 is about 22808.4960267002. The cubic root of 520227491 is about 804.2624011499.

The spelling of 520227491 in words is "five hundred twenty million, two hundred twenty-seven thousand, four hundred ninety-one".