51602641 has 4 divisors (see below), whose sum is σ = 52861284. Its totient is φ = 50344000.

The previous prime is 51602611. The next prime is 51602647. The reversal of 51602641 is 14620615.

51602641 = 5079² + 5080².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25796241 + 25806400 = 5079^2 + 5080^2 .

It is a cyclic number.

It is not a de Polignac number, because 51602641 - 2⁵ = 51602609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51602647) 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, 629260 + ... + 629341.

It is an arithmetic number, because the mean of its divisors is an integer number (13215321).

Almost surely, 2^51602641 is an apocalyptic number.

51602641 is the 5080-th centered square number.

It is an amenable number.

51602641 is a deficient number, since it is larger than the sum of its proper divisors (1258643).

51602641 is a wasteful number, since it uses less digits than its factorization.

51602641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258642.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51602641 is about 7183.4978248761. The cubic root of 51602641 is about 372.2979484684.

The spelling of 51602641 in words is "fifty-one million, six hundred two thousand, six hundred forty-one".