51970347 has 36 divisors (see below), whose sum is σ = 88884432. Its totient is φ = 29066400.

The previous prime is 51970333. The next prime is 51970439. The reversal of 51970347 is 74307915.

It is a happy number.

It is not a de Polignac number, because 51970347 - 2¹¹ = 51968299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51970307) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12322 + ... + 15992.

It is an arithmetic number, because the mean of its divisors is an integer number (2469012).

Almost surely, 2^51970347 is an apocalyptic number.

51970347 is a deficient number, since it is larger than the sum of its proper divisors (36914085).

51970347 is a wasteful number, since it uses less digits than its factorization.

51970347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3712 (or 3698 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 51970347 is about 7209.0461921117. The cubic root of 51970347 is about 373.1801533750.

The spelling of 51970347 in words is "fifty-one million, nine hundred seventy thousand, three hundred forty-seven".