51723207 has 6 divisors (see below), whose sum is σ = 74711312. Its totient is φ = 34482132.

The previous prime is 51723157. The next prime is 51723223. The reversal of 51723207 is 70232715.

It is not a de Polignac number, because 51723207 - 2⁶ = 51723143 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 (51723227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2873503 + ... + 2873520.

Almost surely, 2^51723207 is an apocalyptic number.

51723207 is a deficient number, since it is larger than the sum of its proper divisors (22988105).

51723207 is a wasteful number, since it uses less digits than its factorization.

51723207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747029 (or 5747026 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 51723207 is about 7191.8848016358. The cubic root of 51723207 is about 372.5876724105.

The spelling of 51723207 in words is "fifty-one million, seven hundred twenty-three thousand, two hundred seven".