45821261 has 2 divisors, whose sum is σ = 45821262. Its totient is φ = 45821260.

The previous prime is 45821249. The next prime is 45821263. The reversal of 45821261 is 16212854.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35772361 + 10048900 = 5981^2 + 3170^2 .

It is a cyclic number.

It is not a de Polignac number, because 45821261 - 2⁶ = 45821197 is a prime.

Together with 45821263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45821263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22910630 + 22910631.

It is an arithmetic number, because the mean of its divisors is an integer number (22910631).

Almost surely, 2^45821261 is an apocalyptic number.

It is an amenable number.

45821261 is a deficient number, since it is larger than the sum of its proper divisors (1).

45821261 is an equidigital number, since it uses as much as digits as its factorization.

45821261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 29.

The square root of 45821261 is about 6769.1403442387. The cubic root of 45821261 is about 357.8401047243.

The spelling of 45821261 in words is "forty-five million, eight hundred twenty-one thousand, two hundred sixty-one".