87026257 has 4 divisors (see below), whose sum is σ = 89378356. Its totient is φ = 84674160.

The previous prime is 87026249. The next prime is 87026263. The reversal of 87026257 is 75262078.

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 82737216 + 4289041 = 9096^2 + 2071^2 .

It is a cyclic number.

It is not a de Polignac number, because 87026257 - 2³ = 87026249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 2352061 = 87026257 / (8 + 7 + 0 + 2 + 6 + 2 + 5 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87026287) 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, 1175994 + ... + 1176067.

It is an arithmetic number, because the mean of its divisors is an integer number (22344589).

Almost surely, 2^87026257 is an apocalyptic number.

It is an amenable number.

87026257 is a deficient number, since it is larger than the sum of its proper divisors (2352099).

87026257 is a wasteful number, since it uses less digits than its factorization.

87026257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352098.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 87026257 is about 9328.7864698470. The cubic root of 87026257 is about 443.1493347038.

The spelling of 87026257 in words is "eighty-seven million, twenty-six thousand, two hundred fifty-seven".