51702641 has 4 divisors (see below), whose sum is σ = 52905072. Its totient is φ = 50500212.

The previous prime is 51702617. The next prime is 51702647. The reversal of 51702641 is 14620715.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51702641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51702641.

It is not an unprimeable number, because it can be changed into a prime (51702647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601151 + ... + 601236.

It is an arithmetic number, because the mean of its divisors is an integer number (13226268).

Almost surely, 2^51702641 is an apocalyptic number.

It is an amenable number.

51702641 is a deficient number, since it is larger than the sum of its proper divisors (1202431).

51702641 is a wasteful number, since it uses less digits than its factorization.

51702641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202430.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 51702641 is about 7190.4548534846. The cubic root of 51702641 is about 372.5382835298.

The spelling of 51702641 in words is "fifty-one million, seven hundred two thousand, six hundred forty-one".