15231563 has 2 divisors, whose sum is σ = 15231564. Its totient is φ = 15231562.

The previous prime is 15231553. The next prime is 15231577. The reversal of 15231563 is 36513251.

15231563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15231563 - 2⁴ = 15231547 is a prime.

It is a super-2 number, since 2×15231563² = 464001022845938, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (15231553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7615781 + 7615782.

It is an arithmetic number, because the mean of its divisors is an integer number (7615782).

Almost surely, 2^15231563 is an apocalyptic number.

15231563 is a deficient number, since it is larger than the sum of its proper divisors (1).

15231563 is an equidigital number, since it uses as much as digits as its factorization.

15231563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 26.

The square root of 15231563 is about 3902.7635080799. The cubic root of 15231563 is about 247.8838067818.

The spelling of 15231563 in words is "fifteen million, two hundred thirty-one thousand, five hundred sixty-three".