87787351 has 4 divisors (see below), whose sum is σ = 88002400. Its totient is φ = 87572304.

The previous prime is 87787333. The next prime is 87787369. The reversal of 87787351 is 15378778.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (87787333) and next prime (87787369).

It is a cyclic number.

It is not a de Polignac number, because 87787351 - 2¹⁹ = 87263063 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 (87787151) 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, 106911 + ... + 107728.

It is an arithmetic number, because the mean of its divisors is an integer number (22000600).

Almost surely, 2^87787351 is an apocalyptic number.

87787351 is a deficient number, since it is larger than the sum of its proper divisors (215049).

87787351 is a wasteful number, since it uses less digits than its factorization.

87787351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215048.

The product of its digits is 329280, while the sum is 46.

The square root of 87787351 is about 9369.4904343833. The cubic root of 87787351 is about 444.4374509988.

It can be divided in two parts, 8778 and 7351, that added together give a square (16129 = 127²).

The spelling of 87787351 in words is "eighty-seven million, seven hundred eighty-seven thousand, three hundred fifty-one".