87161033 has 4 divisors (see below), whose sum is σ = 87665028. Its totient is φ = 86657040.

The previous prime is 87161029. The next prime is 87161047. The reversal of 87161033 is 33016178.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72812089 + 14348944 = 8533^2 + 3788^2 .

It is a cyclic number.

It is not a de Polignac number, because 87161033 - 2² = 87161029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87160987 and 87161005.

It is not an unprimeable number, because it can be changed into a prime (87161003) 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, 251738 + ... + 252083.

It is an arithmetic number, because the mean of its divisors is an integer number (21916257).

Almost surely, 2^87161033 is an apocalyptic number.

It is an amenable number.

87161033 is a deficient number, since it is larger than the sum of its proper divisors (503995).

87161033 is a wasteful number, since it uses less digits than its factorization.

87161033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503994.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 87161033 is about 9336.0073371865. The cubic root of 87161033 is about 443.3779825133.

The spelling of 87161033 in words is "eighty-seven million, one hundred sixty-one thousand, thirty-three".