45272561 has 2 divisors, whose sum is σ = 45272562. Its totient is φ = 45272560.

The previous prime is 45272537. The next prime is 45272621. The reversal of 45272561 is 16527254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44302336 + 970225 = 6656^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 45272561 - 2¹⁰ = 45271537 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is equal to p_2733674 and since 45272561 and 2733674 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (45272261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22636280 + 22636281.

It is an arithmetic number, because the mean of its divisors is an integer number (22636281).

Almost surely, 2^45272561 is an apocalyptic number.

It is an amenable number.

45272561 is a deficient number, since it is larger than the sum of its proper divisors (1).

45272561 is an equidigital number, since it uses as much as digits as its factorization.

45272561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 32.

The square root of 45272561 is about 6728.4887604870. The cubic root of 45272561 is about 356.4060116518.

The spelling of 45272561 in words is "forty-five million, two hundred seventy-two thousand, five hundred sixty-one".