46587781 has 2 divisors, whose sum is σ = 46587782. Its totient is φ = 46587780.

The previous prime is 46587731. The next prime is 46587787. The reversal of 46587781 is 18778564.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24591681 + 21996100 = 4959^2 + 4690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-46587781 is a prime.

It is a super-2 number, since 2×46587781² = 4340842677007922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46587787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23293890 + 23293891.

It is an arithmetic number, because the mean of its divisors is an integer number (23293891).

Almost surely, 2^46587781 is an apocalyptic number.

It is an amenable number.

46587781 is a deficient number, since it is larger than the sum of its proper divisors (1).

46587781 is an equidigital number, since it uses as much as digits as its factorization.

46587781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 46.

The square root of 46587781 is about 6825.5242289512. The cubic root of 46587781 is about 359.8244540219.

The spelling of 46587781 in words is "forty-six million, five hundred eighty-seven thousand, seven hundred eighty-one".