45217519 has 2 divisors, whose sum is σ = 45217520. Its totient is φ = 45217518.

The previous prime is 45217489. The next prime is 45217537. The reversal of 45217519 is 91571254.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45217519 - 2¹³ = 45209327 is a prime.

It is a super-2 number, since 2×45217519² = 4089248049030722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45217559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22608759 + 22608760.

It is an arithmetic number, because the mean of its divisors is an integer number (22608760).

Almost surely, 2^45217519 is an apocalyptic number.

45217519 is a deficient number, since it is larger than the sum of its proper divisors (1).

45217519 is an equidigital number, since it uses as much as digits as its factorization.

45217519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 34.

The square root of 45217519 is about 6724.3972964125. The cubic root of 45217519 is about 356.2615145965.

It can be divided in two parts, 452 and 17519, that added together give a palindrome (17971).

The spelling of 45217519 in words is "forty-five million, two hundred seventeen thousand, five hundred nineteen".