87250405 has 8 divisors (see below), whose sum is σ = 114218784. Its totient is φ = 63454800.

The previous prime is 87250393. The next prime is 87250411. The reversal of 87250405 is 50405278.

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

It is not a de Polignac number, because 87250405 - 2⁷ = 87250277 is a prime.

It is a super-3 number, since 3×87250405³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793131 + ... + 793240.

It is an arithmetic number, because the mean of its divisors is an integer number (14277348).

Almost surely, 2^87250405 is an apocalyptic number.

It is an amenable number.

87250405 is a deficient number, since it is larger than the sum of its proper divisors (26968379).

87250405 is a wasteful number, since it uses less digits than its factorization.

87250405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586387.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 87250405 is about 9340.7925252625. The cubic root of 87250405 is about 443.5294723852.

The spelling of 87250405 in words is "eighty-seven million, two hundred fifty thousand, four hundred five".