45494821 has 2 divisors, whose sum is σ = 45494822. Its totient is φ = 45494820.

The previous prime is 45494777. The next prime is 45494831. The reversal of 45494821 is 12849454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26884225 + 18610596 = 5185^2 + 4314^2 .

It is a cyclic number.

It is not a de Polignac number, because 45494821 - 2¹³ = 45486629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45494831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22747410 + 22747411.

It is an arithmetic number, because the mean of its divisors is an integer number (22747411).

Almost surely, 2^45494821 is an apocalyptic number.

It is an amenable number.

45494821 is a deficient number, since it is larger than the sum of its proper divisors (1).

45494821 is an equidigital number, since it uses as much as digits as its factorization.

45494821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 37.

The square root of 45494821 is about 6744.9848776702. The cubic root of 45494821 is about 356.9883034350.

The spelling of 45494821 in words is "forty-five million, four hundred ninety-four thousand, eight hundred twenty-one".