75506651 has 4 divisors (see below), whose sum is σ = 82370904. Its totient is φ = 68642400.

The previous prime is 75506623. The next prime is 75506657. The reversal of 75506651 is 15660557.

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

It is a cyclic number.

It is not a de Polignac number, because 75506651 - 2¹⁰ = 75505627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75506657) 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, 3432110 + ... + 3432131.

It is an arithmetic number, because the mean of its divisors is an integer number (20592726).

Almost surely, 2^75506651 is an apocalyptic number.

75506651 is a deficient number, since it is larger than the sum of its proper divisors (6864253).

75506651 is a wasteful number, since it uses less digits than its factorization.

75506651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6864252.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 75506651 is about 8689.4563121061. The cubic root of 75506651 is about 422.6638156582.

The spelling of 75506651 in words is "seventy-five million, five hundred six thousand, six hundred fifty-one".