51935247 has 36 divisors (see below), whose sum is σ = 93988440. Its totient is φ = 27391392.

The previous prime is 51935203. The next prime is 51935269. The reversal of 51935247 is 74253915.

It is not a de Polignac number, because 51935247 - 2¹⁶ = 51869711 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51935287) 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, 1204 + ... + 10262.

It is an arithmetic number, because the mean of its divisors is an integer number (2610790).

Almost surely, 2^51935247 is an apocalyptic number.

51935247 is a deficient number, since it is larger than the sum of its proper divisors (42053193).

51935247 is a wasteful number, since it uses less digits than its factorization.

51935247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9092 (or 9082 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 51935247 is about 7206.6113395964. The cubic root of 51935247 is about 373.0961210109.

It can be divided in two parts, 5193 and 5247, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 51935247 in words is "fifty-one million, nine hundred thirty-five thousand, two hundred forty-seven".