45921779 has 2 divisors, whose sum is σ = 45921780. Its totient is φ = 45921778.

The previous prime is 45921767. The next prime is 45921781. The reversal of 45921779 is 97712954.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45921779 - 2¹⁶ = 45856243 is a prime.

Together with 45921781, 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 (45921719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22960889 + 22960890.

It is an arithmetic number, because the mean of its divisors is an integer number (22960890).

Almost surely, 2^45921779 is an apocalyptic number.

45921779 is a deficient number, since it is larger than the sum of its proper divisors (1).

45921779 is an equidigital number, since it uses as much as digits as its factorization.

45921779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 45921779 is about 6776.5610009798. The cubic root of 45921779 is about 358.1015779713.

The spelling of 45921779 in words is "forty-five million, nine hundred twenty-one thousand, seven hundred seventy-nine".