87145951 has 8 divisors (see below), whose sum is σ = 93970800. Its totient is φ = 80544960.

The previous prime is 87145909. The next prime is 87145963. The reversal of 87145951 is 15954178.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87145951 - 2⁷ = 87145823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87145901) 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, 55156 + ... + 56713.

It is an arithmetic number, because the mean of its divisors is an integer number (11746350).

Almost surely, 2^87145951 is an apocalyptic number.

87145951 is a deficient number, since it is larger than the sum of its proper divisors (6824849).

87145951 is a wasteful number, since it uses less digits than its factorization.

87145951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111929.

The product of its digits is 50400, while the sum is 40.

The square root of 87145951 is about 9335.1995693718. The cubic root of 87145951 is about 443.3524075813.

The spelling of 87145951 in words is "eighty-seven million, one hundred forty-five thousand, nine hundred fifty-one".