73599121 has 4 divisors (see below), whose sum is σ = 73948144. Its totient is φ = 73250100.

The previous prime is 73599109. The next prime is 73599131. The reversal of 73599121 is 12199537.

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: 12199537 = 7 ⋅1742791.

It is a cyclic number.

It is not a de Polignac number, because 73599121 - 2²³ = 65210513 is a prime.

It is a super-2 number, since 2×73599121² = 10833661223945282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73599131) 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, 174195 + ... + 174616.

It is an arithmetic number, because the mean of its divisors is an integer number (18487036).

Almost surely, 2^73599121 is an apocalyptic number.

It is an amenable number.

73599121 is a deficient number, since it is larger than the sum of its proper divisors (349023).

73599121 is a wasteful number, since it uses less digits than its factorization.

73599121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349022.

The product of its digits is 17010, while the sum is 37.

The square root of 73599121 is about 8578.9930061750. The cubic root of 73599121 is about 419.0741529303.

It can be divided in two parts, 735 and 99121, that added together give a square (99856 = 316²).

The spelling of 73599121 in words is "seventy-three million, five hundred ninety-nine thousand, one hundred twenty-one".