51253147 has 8 divisors (see below), whose sum is σ = 59201712. Its totient is φ = 43852800.

The previous prime is 51253133. The next prime is 51253183. The reversal of 51253147 is 74135215.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51253147 - 2²³ = 42864539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51253117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136854 + ... + 137227.

It is an arithmetic number, because the mean of its divisors is an integer number (7400214).

Almost surely, 2^51253147 is an apocalyptic number.

51253147 is a deficient number, since it is larger than the sum of its proper divisors (7948565).

51253147 is a wasteful number, since it uses less digits than its factorization.

51253147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274109.

The product of its digits is 4200, while the sum is 28.

The square root of 51253147 is about 7159.1303242782. The cubic root of 51253147 is about 371.4555448219.

It can be divided in two parts, 512531 and 47, that added together give a triangular number (512578 = T₁₀₁₂).

The spelling of 51253147 in words is "fifty-one million, two hundred fifty-three thousand, one hundred forty-seven".