51360645 has 48 divisors (see below), whose sum is σ = 97234560. Its totient is φ = 22677120.

The previous prime is 51360643. The next prime is 51360677. The reversal of 51360645 is 54606315.

It is not a de Polignac number, because 51360645 - 2¹ = 51360643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51360643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100651 + ... + 101159.

It is an arithmetic number, because the mean of its divisors is an integer number (2025720).

Almost surely, 2^51360645 is an apocalyptic number.

It is an amenable number.

51360645 is a deficient number, since it is larger than the sum of its proper divisors (45873915).

51360645 is a wasteful number, since it uses less digits than its factorization.

51360645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 51360645 is about 7166.6341472130. The cubic root of 51360645 is about 371.7150595780.

The spelling of 51360645 in words is "fifty-one million, three hundred sixty thousand, six hundred forty-five".