87283381 has 4 divisors (see below), whose sum is σ = 88335072. Its totient is φ = 86231692.

The previous prime is 87283373. The next prime is 87283393. The reversal of 87283381 is 18338278.

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 87283381 - 2³ = 87283373 is a prime.

It is a super-2 number, since 2×87283381² = 15236777197582322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87283351) 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, 525721 + ... + 525886.

It is an arithmetic number, because the mean of its divisors is an integer number (22083768).

Almost surely, 2^87283381 is an apocalyptic number.

It is an amenable number.

87283381 is a deficient number, since it is larger than the sum of its proper divisors (1051691).

87283381 is a wasteful number, since it uses less digits than its factorization.

87283381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051690.

The product of its digits is 64512, while the sum is 40.

The square root of 87283381 is about 9342.5575192235. The cubic root of 87283381 is about 443.5853421762.

The spelling of 87283381 in words is "eighty-seven million, two hundred eighty-three thousand, three hundred eighty-one".