76521301 has 16 divisors (see below), whose sum is σ = 82813104. Its totient is φ = 70447104.

The previous prime is 76521287. The next prime is 76521331. The reversal of 76521301 is 10312567.

It can be written as a sum of positive squares in 8 ways, for example, as 1716100 + 74805201 = 1310^2 + 8649^2 .

It is a cyclic number.

It is not a de Polignac number, because 76521301 - 2⁹ = 76520789 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 (76521331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244321 + ... + 244633.

It is an arithmetic number, because the mean of its divisors is an integer number (5175819).

Almost surely, 2^76521301 is an apocalyptic number.

It is an amenable number.

76521301 is a deficient number, since it is larger than the sum of its proper divisors (6291803).

76521301 is a wasteful number, since it uses less digits than its factorization.

76521301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 76521301 is about 8747.6454546352. The cubic root of 76521301 is about 424.5486345286.

Adding to 76521301 its reverse (10312567), we get a palindrome (86833868).

The spelling of 76521301 in words is "seventy-six million, five hundred twenty-one thousand, three hundred one".