73215151 has 4 divisors (see below), whose sum is σ = 77068600. Its totient is φ = 69361704.

The previous prime is 73215127. The next prime is 73215161. The reversal of 73215151 is 15151237.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15151237 = 3643 ⋅4159.

It is not a de Polignac number, because 73215151 - 2⁹ = 73214639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73215161) 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, 1926696 + ... + 1926733.

It is an arithmetic number, because the mean of its divisors is an integer number (19267150).

Almost surely, 2^73215151 is an apocalyptic number.

73215151 is a deficient number, since it is larger than the sum of its proper divisors (3853449).

73215151 is a wasteful number, since it uses less digits than its factorization.

73215151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3853448.

The product of its digits is 1050, while the sum is 25.

The square root of 73215151 is about 8556.5852417889. The cubic root of 73215151 is about 418.3441055128.

Adding to 73215151 its reverse (15151237), we get a palindrome (88366388).

The spelling of 73215151 in words is "seventy-three million, two hundred fifteen thousand, one hundred fifty-one".