87038261 has 4 divisors (see below), whose sum is σ = 88264224. Its totient is φ = 85812300.

The previous prime is 87038239. The next prime is 87038269. The reversal of 87038261 is 16283078.

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 87038261 - 2¹⁸ = 86776117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87038269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612875 + ... + 613016.

It is an arithmetic number, because the mean of its divisors is an integer number (22066056).

Almost surely, 2^87038261 is an apocalyptic number.

It is an amenable number.

87038261 is a deficient number, since it is larger than the sum of its proper divisors (1225963).

87038261 is a wasteful number, since it uses less digits than its factorization.

87038261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225962.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 87038261 is about 9329.4298325246. The cubic root of 87038261 is about 443.1697090913.

The spelling of 87038261 in words is "eighty-seven million, thirty-eight thousand, two hundred sixty-one".