87401081 has 8 divisors (see below), whose sum is σ = 92923200. Its totient is φ = 82022512.

The previous prime is 87401051. The next prime is 87401087. The reversal of 87401081 is 18010478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87401081 is a prime.

It is a super-2 number, since 2×87401081² = 15277897919937122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87401087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34631 + ... + 37068.

It is an arithmetic number, because the mean of its divisors is an integer number (11615400).

Almost surely, 2^87401081 is an apocalyptic number.

It is an amenable number.

87401081 is a deficient number, since it is larger than the sum of its proper divisors (5522119).

87401081 is a wasteful number, since it uses less digits than its factorization.

87401081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71775.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 87401081 is about 9348.8545287645. The cubic root of 87401081 is about 443.7846414535.

The spelling of 87401081 in words is "eighty-seven million, four hundred one thousand, eighty-one".