516001426 has 4 divisors (see below), whose sum is σ = 774002142. Its totient is φ = 258000712.

The previous prime is 516001393. The next prime is 516001427. The reversal of 516001426 is 624100615.

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

It can be written as a sum of positive squares in only one way, i.e., 304328025 + 211673401 = 17445^2 + 14549^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 516001426.

It is not an unprimeable number, because it can be changed into a prime (516001427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129000355 + ... + 129000358.

Almost surely, 2^516001426 is an apocalyptic number.

516001426 is a deficient number, since it is larger than the sum of its proper divisors (258000716).

516001426 is a wasteful number, since it uses less digits than its factorization.

516001426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258000715.

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

The square root of 516001426 is about 22715.6647712542. The cubic root of 516001426 is about 802.0786702761.

The spelling of 516001426 in words is "five hundred sixteen million, one thousand, four hundred twenty-six".