76487251 has 8 divisors (see below), whose sum is σ = 78968864. Its totient is φ = 74027520.

The previous prime is 76487227. The next prime is 76487269. The reversal of 76487251 is 15278467.

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

It is a 9-Lehmer number, since φ(76487251) divides (76487251-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 76487251 - 2¹³ = 76479059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76487951) 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 7 ways as a sum of consecutive naturals, for example, 1786 + ... + 12496.

It is an arithmetic number, because the mean of its divisors is an integer number (9871108).

Almost surely, 2^76487251 is an apocalyptic number.

76487251 is the 7141-st pentagonal number.

76487251 is a deficient number, since it is larger than the sum of its proper divisors (2481613).

76487251 is a wasteful number, since it uses less digits than its factorization.

76487251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10941.

The product of its digits is 94080, while the sum is 40.

The square root of 76487251 is about 8745.6990000800. The cubic root of 76487251 is about 424.4856541318.

The spelling of 76487251 in words is "seventy-six million, four hundred eighty-seven thousand, two hundred fifty-one".