73871951 has 4 divisors (see below), whose sum is σ = 74189232. Its totient is φ = 73554672.

The previous prime is 73871933. The next prime is 73872011. The reversal of 73871951 is 15917837.

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 73871951 - 2⁶ = 73871887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73871899 and 73871908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73873951) 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, 158291 + ... + 158756.

It is an arithmetic number, because the mean of its divisors is an integer number (18547308).

Almost surely, 2^73871951 is an apocalyptic number.

73871951 is a deficient number, since it is larger than the sum of its proper divisors (317281).

73871951 is a wasteful number, since it uses less digits than its factorization.

73871951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317280.

The product of its digits is 52920, while the sum is 41.

The square root of 73871951 is about 8594.8793476116. The cubic root of 73871951 is about 419.5913466578.

The spelling of 73871951 in words is "seventy-three million, eight hundred seventy-one thousand, nine hundred fifty-one".