73475551 has 4 divisors (see below), whose sum is σ = 73516104. Its totient is φ = 73435000.

The previous prime is 73475477. The next prime is 73475579. The reversal of 73475551 is 15557437.

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

It is a cyclic number.

It is not a de Polignac number, because 73475551 - 2²³ = 65086943 is a prime.

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 73475551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73425551) 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, 17425 + ... + 21226.

It is an arithmetic number, because the mean of its divisors is an integer number (18379026).

Almost surely, 2^73475551 is an apocalyptic number.

73475551 is a deficient number, since it is larger than the sum of its proper divisors (40553).

73475551 is a wasteful number, since it uses less digits than its factorization.

73475551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40552.

The product of its digits is 73500, while the sum is 37.

The square root of 73475551 is about 8571.7880865080. The cubic root of 73475551 is about 418.8394852645.

The spelling of 73475551 in words is "seventy-three million, four hundred seventy-five thousand, five hundred fifty-one".