45042461 has 4 divisors (see below), whose sum is σ = 45780924. Its totient is φ = 44304000.

The previous prime is 45042451. The next prime is 45042463. The reversal of 45042461 is 16424054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6528025 + 38514436 = 2555^2 + 6206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45042461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45042461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45042463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369140 + ... + 369261.

It is an arithmetic number, because the mean of its divisors is an integer number (11445231).

Almost surely, 2^45042461 is an apocalyptic number.

It is an amenable number.

45042461 is a deficient number, since it is larger than the sum of its proper divisors (738463).

45042461 is an equidigital number, since it uses as much as digits as its factorization.

45042461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738462.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 45042461 is about 6711.3680423592. The cubic root of 45042461 is about 355.8011687963.

The spelling of 45042461 in words is "forty-five million, forty-two thousand, four hundred sixty-one".