76150021 has 8 divisors (see below), whose sum is σ = 81952344. Its totient is φ = 70494720.

The previous prime is 76150013. The next prime is 76150031. The reversal of 76150021 is 12005167.

It can be written as a sum of positive squares in 4 ways, for example, as 216225 + 75933796 = 465^2 + 8714^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 76150021 - 2³ = 76150013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76149974 and 76150001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76150031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35680 + ... + 37753.

It is an arithmetic number, because the mean of its divisors is an integer number (10244043).

Almost surely, 2^76150021 is an apocalyptic number.

It is an amenable number.

76150021 is a deficient number, since it is larger than the sum of its proper divisors (5802323).

76150021 is a wasteful number, since it uses less digits than its factorization.

76150021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73511.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 76150021 is about 8726.3979395854. The cubic root of 76150021 is about 423.8608868562.

Adding to 76150021 its reverse (12005167), we get a palindrome (88155188).

The spelling of 76150021 in words is "seventy-six million, one hundred fifty thousand, twenty-one".