51742471 has 8 divisors (see below), whose sum is σ = 56498688. Its totient is φ = 46995000.

The previous prime is 51742463. The next prime is 51742487. The reversal of 51742471 is 17424715.

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 51742471 - 2³ = 51742463 is a prime.

It is a super-3 number, since 3×51742471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51740471) 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, 20256 + ... + 22666.

It is an arithmetic number, because the mean of its divisors is an integer number (7062336).

Almost surely, 2^51742471 is an apocalyptic number.

51742471 is a deficient number, since it is larger than the sum of its proper divisors (4756217).

51742471 is a wasteful number, since it uses less digits than its factorization.

51742471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373.

The product of its digits is 7840, while the sum is 31.

The square root of 51742471 is about 7193.2239642597. The cubic root of 51742471 is about 372.6339226880.

The spelling of 51742471 in words is "fifty-one million, seven hundred forty-two thousand, four hundred seventy-one".