51532643 has 2 divisors, whose sum is σ = 51532644. Its totient is φ = 51532642.

The previous prime is 51532609. The next prime is 51532669. The reversal of 51532643 is 34623515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51532643 - 2²² = 47338339 is a prime.

It is a super-2 number, since 2×51532643² = 5311226589130898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51532603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25766321 + 25766322.

It is an arithmetic number, because the mean of its divisors is an integer number (25766322).

Almost surely, 2^51532643 is an apocalyptic number.

51532643 is a deficient number, since it is larger than the sum of its proper divisors (1).

51532643 is an equidigital number, since it uses as much as digits as its factorization.

51532643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 51532643 is about 7178.6240325009. The cubic root of 51532643 is about 372.1295339356.

The spelling of 51532643 in words is "fifty-one million, five hundred thirty-two thousand, six hundred forty-three".