45991541 has 2 divisors, whose sum is σ = 45991542. Its totient is φ = 45991540.

The previous prime is 45991537. The next prime is 45991549. The reversal of 45991541 is 14519954.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45508516 + 483025 = 6746^2 + 695^2 .

It is a cyclic number.

It is not a de Polignac number, because 45991541 - 2² = 45991537 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 45991495 and 45991504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45991549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22995770 + 22995771.

It is an arithmetic number, because the mean of its divisors is an integer number (22995771).

Almost surely, 2^45991541 is an apocalyptic number.

It is an amenable number.

45991541 is a deficient number, since it is larger than the sum of its proper divisors (1).

45991541 is an equidigital number, since it uses as much as digits as its factorization.

45991541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 38.

The square root of 45991541 is about 6781.7063487002. The cubic root of 45991541 is about 358.2828227103.

The spelling of 45991541 in words is "forty-five million, nine hundred ninety-one thousand, five hundred forty-one".