531374563 has 2 divisors, whose sum is σ = 531374564. Its totient is φ = 531374562.

The previous prime is 531374537. The next prime is 531374603. The reversal of 531374563 is 365473135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531374563 - 2¹³ = 531366371 is a prime.

It is equal to p_27919045 and since 531374563 and 27919045 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (531374663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265687281 + 265687282.

It is an arithmetic number, because the mean of its divisors is an integer number (265687282).

Almost surely, 2^531374563 is an apocalyptic number.

531374563 is a deficient number, since it is larger than the sum of its proper divisors (1).

531374563 is an equidigital number, since it uses as much as digits as its factorization.

531374563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 37.

The square root of 531374563 is about 23051.5631357182. The cubic root of 531374563 is about 809.9662451005.

The spelling of 531374563 in words is "five hundred thirty-one million, three hundred seventy-four thousand, five hundred sixty-three".