45217787 has 2 divisors, whose sum is σ = 45217788. Its totient is φ = 45217786.

The previous prime is 45217763. The next prime is 45217789. The reversal of 45217787 is 78771254.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45217787 - 2¹⁰ = 45216763 is a prime.

It is a super-2 number, since 2×45217787² = 4089296522354738, which contains 22 as substring.

Together with 45217789, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45217789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22608893 + 22608894.

It is an arithmetic number, because the mean of its divisors is an integer number (22608894).

Almost surely, 2^45217787 is an apocalyptic number.

45217787 is a deficient number, since it is larger than the sum of its proper divisors (1).

45217787 is an equidigital number, since it uses as much as digits as its factorization.

45217787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109760, while the sum is 41.

The square root of 45217787 is about 6724.4172238195. The cubic root of 45217787 is about 356.2622184380.

The spelling of 45217787 in words is "forty-five million, two hundred seventeen thousand, seven hundred eighty-seven".