45771421 has 2 divisors, whose sum is σ = 45771422. Its totient is φ = 45771420.

The previous prime is 45771379. The next prime is 45771503. The reversal of 45771421 is 12417754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37039396 + 8732025 = 6086^2 + 2955^2 .

It is a cyclic number.

It is not a de Polignac number, because 45771421 - 2⁹ = 45770909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45771521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22885710 + 22885711.

It is an arithmetic number, because the mean of its divisors is an integer number (22885711).

Almost surely, 2^45771421 is an apocalyptic number.

It is an amenable number.

45771421 is a deficient number, since it is larger than the sum of its proper divisors (1).

45771421 is an equidigital number, since it uses as much as digits as its factorization.

45771421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7840, while the sum is 31.

The square root of 45771421 is about 6765.4579298079. The cubic root of 45771421 is about 357.7103162036.

The spelling of 45771421 in words is "forty-five million, seven hundred seventy-one thousand, four hundred twenty-one".