73897501 has 4 divisors (see below), whose sum is σ = 74727900. Its totient is φ = 73067104.

The previous prime is 73897471. The next prime is 73897507. The reversal of 73897501 is 10579837.

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 49632025 + 24265476 = 7045^2 + 4926^2 .

It is a cyclic number.

It is not a de Polignac number, because 73897501 - 2¹¹ = 73895453 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73897507) 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, 415066 + ... + 415243.

It is an arithmetic number, because the mean of its divisors is an integer number (18681975).

Almost surely, 2^73897501 is an apocalyptic number.

It is an amenable number.

73897501 is a deficient number, since it is larger than the sum of its proper divisors (830399).

73897501 is an equidigital number, since it uses as much as digits as its factorization.

73897501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830398.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 73897501 is about 8596.3655692391. The cubic root of 73897501 is about 419.6397155946.

The spelling of 73897501 in words is "seventy-three million, eight hundred ninety-seven thousand, five hundred one".