45711987 has 4 divisors (see below), whose sum is σ = 60949320. Its totient is φ = 30474656.

The previous prime is 45711973. The next prime is 45711989. The reversal of 45711987 is 78911754.

45711987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 45711987 - 2⁶ = 45711923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45711989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7618662 + ... + 7618667.

It is an arithmetic number, because the mean of its divisors is an integer number (15237330).

Almost surely, 2^45711987 is an apocalyptic number.

45711987 is a deficient number, since it is larger than the sum of its proper divisors (15237333).

45711987 is a wasteful number, since it uses less digits than its factorization.

45711987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15237332.

The product of its digits is 70560, while the sum is 42.

The square root of 45711987 is about 6761.0640434772. The cubic root of 45711987 is about 357.5554206874. Note that the first 3 decimals are identical.

The spelling of 45711987 in words is "forty-five million, seven hundred eleven thousand, nine hundred eighty-seven".