87152261 has 4 divisors (see below), whose sum is σ = 99602592. Its totient is φ = 74701932.

The previous prime is 87152239. The next prime is 87152281. The reversal of 87152261 is 16225178.

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 87152261 - 2¹⁰ = 87151237 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 (87152201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6225155 + ... + 6225168.

It is an arithmetic number, because the mean of its divisors is an integer number (24900648).

Almost surely, 2^87152261 is an apocalyptic number.

It is an amenable number.

87152261 is a deficient number, since it is larger than the sum of its proper divisors (12450331).

87152261 is a wasteful number, since it uses less digits than its factorization.

87152261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12450330.

The product of its digits is 6720, while the sum is 32.

The square root of 87152261 is about 9335.5375313905. The cubic root of 87152261 is about 443.3631079682.

The spelling of 87152261 in words is "eighty-seven million, one hundred fifty-two thousand, two hundred sixty-one".