51061272 has 16 divisors (see below), whose sum is σ = 127653240. Its totient is φ = 17020416.

The previous prime is 51061271. The next prime is 51061279. The reversal of 51061272 is 27216015.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 2127553 = 51061272 / (5 + 1 + 0 + 6 + 1 + 2 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51061271) 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, 1063753 + ... + 1063800.

Almost surely, 2^51061272 is an apocalyptic number.

It is an amenable number.

51061272 is an abundant number, since it is smaller than the sum of its proper divisors (76591968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51061272 is a wasteful number, since it uses less digits than its factorization.

51061272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127562 (or 2127558 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 51061272 is about 7145.7170388982. The cubic root of 51061272 is about 370.9914291968.

Adding to 51061272 its reverse (27216015), we get a palindrome (78277287).

The spelling of 51061272 in words is "fifty-one million, sixty-one thousand, two hundred seventy-two".