73572481 has 4 divisors (see below), whose sum is σ = 77900292. Its totient is φ = 69244672.

The previous prime is 73572479. The next prime is 73572509. The reversal of 73572481 is 18427537.

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

It can be written as a sum of positive squares in 2 ways, for example, as 63744256 + 9828225 = 7984^2 + 3135^2 .

It is not a de Polignac number, because 73572481 - 2¹ = 73572479 is a prime.

It is a super-2 number, since 2×73572481² = 10825819920990722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73572481.

It is not an unprimeable number, because it can be changed into a prime (73572431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2163880 + ... + 2163913.

It is an arithmetic number, because the mean of its divisors is an integer number (19475073).

Almost surely, 2^73572481 is an apocalyptic number.

It is an amenable number.

73572481 is a deficient number, since it is larger than the sum of its proper divisors (4327811).

73572481 is a wasteful number, since it uses less digits than its factorization.

73572481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4327810.

The product of its digits is 47040, while the sum is 37.

The square root of 73572481 is about 8577.4402358746. The cubic root of 73572481 is about 419.0235840170.

The spelling of 73572481 in words is "seventy-three million, five hundred seventy-two thousand, four hundred eighty-one".