46781551 has 2 divisors, whose sum is σ = 46781552. Its totient is φ = 46781550.

The previous prime is 46781531. The next prime is 46781561. The reversal of 46781551 is 15518764.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 46781551 - 2⁹ = 46781039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 46781551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46781531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23390775 + 23390776.

It is an arithmetic number, because the mean of its divisors is an integer number (23390776).

Almost surely, 2^46781551 is an apocalyptic number.

46781551 is a deficient number, since it is larger than the sum of its proper divisors (1).

46781551 is an equidigital number, since it uses as much as digits as its factorization.

46781551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 37.

The square root of 46781551 is about 6839.7040140638. The cubic root of 46781551 is about 360.3226300131.

The spelling of 46781551 in words is "forty-six million, seven hundred eighty-one thousand, five hundred fifty-one".