73145089 has 4 divisors (see below), whose sum is σ = 75504640. Its totient is φ = 70785540.

The previous prime is 73145087. The next prime is 73145099. The reversal of 73145089 is 98054137.

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 73145089 - 2¹ = 73145087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73145087) 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, 1179729 + ... + 1179790.

It is an arithmetic number, because the mean of its divisors is an integer number (18876160).

Almost surely, 2^73145089 is an apocalyptic number.

It is an amenable number.

73145089 is a deficient number, since it is larger than the sum of its proper divisors (2359551).

73145089 is a wasteful number, since it uses less digits than its factorization.

73145089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359550.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 73145089 is about 8552.4902221517. The cubic root of 73145089 is about 418.2106204871.

It can be divided in two parts, 7314 and 5089, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 73145089 in words is "seventy-three million, one hundred forty-five thousand, eighty-nine".