51210471 has 16 divisors (see below), whose sum is σ = 74296544. Its totient is φ = 31186944.

The previous prime is 51210469. The next prime is 51210473. The reversal of 51210471 is 17401215.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51210469) and next prime (51210473).

It is not a de Polignac number, because 51210471 - 2¹ = 51210469 is a prime.

It is a super-3 number, since 3×51210471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51210473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2986 + ... + 10551.

It is an arithmetic number, because the mean of its divisors is an integer number (4643534).

Almost surely, 2^51210471 is an apocalyptic number.

51210471 is a deficient number, since it is larger than the sum of its proper divisors (23086073).

51210471 is a wasteful number, since it uses less digits than its factorization.

51210471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13650.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 51210471 is about 7156.1491739622. The cubic root of 51210471 is about 371.3524185452.

Adding to 51210471 its reverse (17401215), we get a palindrome (68611686).

It can be divided in two parts, 51210 and 471, that added together give a triangular number (51681 = T₃₂₁).

The spelling of 51210471 in words is "fifty-one million, two hundred ten thousand, four hundred seventy-one".