87451047 has 12 divisors (see below), whose sum is σ = 126445800. Its totient is φ = 58241808.

The previous prime is 87451033. The next prime is 87451051. The reversal of 87451047 is 74015478.

It is not a de Polignac number, because 87451047 - 2⁸ = 87450791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87451087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5704 + ... + 14402.

It is an arithmetic number, because the mean of its divisors is an integer number (10537150).

Almost surely, 2^87451047 is an apocalyptic number.

87451047 is a deficient number, since it is larger than the sum of its proper divisors (38994753).

87451047 is a wasteful number, since it uses less digits than its factorization.

87451047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9822 (or 9819 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 87451047 is about 9351.5264529380. The cubic root of 87451047 is about 443.8691938753.

The spelling of 87451047 in words is "eighty-seven million, four hundred fifty-one thousand, forty-seven".