76520449 has 4 divisors (see below), whose sum is σ = 76540464. Its totient is φ = 76500436.

The previous prime is 76520407. The next prime is 76520461. The reversal of 76520449 is 94402567.

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 76520449 - 2¹⁵ = 76487681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76520749) 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, 2287 + ... + 12580.

It is an arithmetic number, because the mean of its divisors is an integer number (19135116).

Almost surely, 2^76520449 is an apocalyptic number.

It is an amenable number.

76520449 is a deficient number, since it is larger than the sum of its proper divisors (20015).

76520449 is a wasteful number, since it uses less digits than its factorization.

76520449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20014.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 76520449 is about 8747.5967556810. The cubic root of 76520449 is about 424.5470588594.

The spelling of 76520449 in words is "seventy-six million, five hundred twenty thousand, four hundred forty-nine".