51396207 has 16 divisors (see below), whose sum is σ = 71142240. Its totient is φ = 32965632.

The previous prime is 51396203. The next prime is 51396211. The reversal of 51396207 is 70269315.

It is an interprime number because it is at equal distance from previous prime (51396203) and next prime (51396211).

It is not a de Polignac number, because 51396207 - 2² = 51396203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51396203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28443 + ... + 30195.

It is an arithmetic number, because the mean of its divisors is an integer number (4446390).

Almost surely, 2^51396207 is an apocalyptic number.

51396207 is a deficient number, since it is larger than the sum of its proper divisors (19746033).

51396207 is a wasteful number, since it uses less digits than its factorization.

51396207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 51396207 is about 7169.1147989135. The cubic root of 51396207 is about 371.8008313539.

The spelling of 51396207 in words is "fifty-one million, three hundred ninety-six thousand, two hundred seven".