87155282 has 4 divisors (see below), whose sum is σ = 130732926. Its totient is φ = 43577640.

The previous prime is 87155221. The next prime is 87155287. The reversal of 87155282 is 28255178.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 81342361 + 5812921 = 9019^2 + 2411^2 .

It is not an unprimeable number, because it can be changed into a prime (87155287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21788819 + ... + 21788822.

Almost surely, 2^87155282 is an apocalyptic number.

87155282 is a deficient number, since it is larger than the sum of its proper divisors (43577644).

87155282 is a wasteful number, since it uses less digits than its factorization.

87155282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43577643.

The product of its digits is 44800, while the sum is 38.

The square root of 87155282 is about 9335.6993310625. The cubic root of 87155282 is about 443.3682307439.

The spelling of 87155282 in words is "eighty-seven million, one hundred fifty-five thousand, two hundred eighty-two".