51538471 has 2 divisors, whose sum is σ = 51538472. Its totient is φ = 51538470.

The previous prime is 51538453. The next prime is 51538489. The reversal of 51538471 is 17483515.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (51538453) and next prime (51538489).

It is a cyclic number.

It is not a de Polignac number, because 51538471 - 2¹³ = 51530279 is a prime.

It is a super-3 number, since 3×51538471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51538411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25769235 + 25769236.

It is an arithmetic number, because the mean of its divisors is an integer number (25769236).

Almost surely, 2^51538471 is an apocalyptic number.

51538471 is a deficient number, since it is larger than the sum of its proper divisors (1).

51538471 is an equidigital number, since it uses as much as digits as its factorization.

51538471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 34.

The square root of 51538471 is about 7179.0299483983. The cubic root of 51538471 is about 372.1435618671.

The spelling of 51538471 in words is "fifty-one million, five hundred thirty-eight thousand, four hundred seventy-one".