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, and also an emirpimes, since its reverse is a distinct semiprime: 75557437 = 397 ⋅190321.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-73475557 is a prime.
It is a Duffinian number.
It is a congruent number.
Almost surely, 273475557 is an apocalyptic number.
It is an amenable number.
73475557 is a wasteful number, since it uses less digits than its factorization.
73475557 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1034938.
The square root of 73475557 is about 8571.7884364933. The cubic root of 73475557 is about 418.8394966653.
The spelling of 73475557 in words is "seventy-three million, four hundred seventy-five thousand, five hundred fifty-seven".