538487651 has 4 divisors (see below), whose sum is σ = 579909792. Its totient is φ = 497065512.

The previous prime is 538487633. The next prime is 538487657. The reversal of 538487651 is 156784835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156784835 = 5 ⋅31356967.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538487651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 538487596 and 538487605.

It is not an unprimeable number, because it can be changed into a prime (538487657) 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, 20711051 + ... + 20711076.

It is an arithmetic number, because the mean of its divisors is an integer number (144977448).

Almost surely, 2^538487651 is an apocalyptic number.

538487651 is a deficient number, since it is larger than the sum of its proper divisors (41422141).

538487651 is a wasteful number, since it uses less digits than its factorization.

538487651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41422140.

The product of its digits is 806400, while the sum is 47.

The square root of 538487651 is about 23205.3366922353. The cubic root of 538487651 is about 813.5643618124.

The spelling of 538487651 in words is "five hundred thirty-eight million, four hundred eighty-seven thousand, six hundred fifty-one".