87273473 has 4 divisors (see below), whose sum is σ = 99741120. Its totient is φ = 74805828.

The previous prime is 87273469. The next prime is 87273481. The reversal of 87273473 is 37437278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87273473 - 2² = 87273469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87273473.

It is not an unprimeable number, because it can be changed into a prime (87273443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6233813 + ... + 6233826.

It is an arithmetic number, because the mean of its divisors is an integer number (24935280).

Almost surely, 2^87273473 is an apocalyptic number.

It is an amenable number.

87273473 is a deficient number, since it is larger than the sum of its proper divisors (12467647).

87273473 is a wasteful number, since it uses less digits than its factorization.

87273473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12467646.

The product of its digits is 197568, while the sum is 41.

The square root of 87273473 is about 9342.0272425208. The cubic root of 87273473 is about 443.5685569653.

The spelling of 87273473 in words is "eighty-seven million, two hundred seventy-three thousand, four hundred seventy-three".