51060861 has 12 divisors (see below), whose sum is σ = 76486592. Its totient is φ = 34040412.

The previous prime is 51060839. The next prime is 51060869. The reversal of 51060861 is 16806015.

51060861 is a `hidden beast` number, since 51 + 0 + 608 + 6 + 1 = 666.

It is not a de Polignac number, because 51060861 - 2⁶ = 51060797 is a prime.

It is a super-2 number, since 2×51060861² = 5214423052122642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51060869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104821 + ... + 105306.

Almost surely, 2^51060861 is an apocalyptic number.

It is an amenable number.

51060861 is a deficient number, since it is larger than the sum of its proper divisors (25425731).

51060861 is an equidigital number, since it uses as much as digits as its factorization.

51060861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210142 (or 210130 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 51060861 is about 7145.6882803548. The cubic root of 51060861 is about 370.9904338052.

Adding to 51060861 its reverse (16806015), we get a palindrome (67866876).

The spelling of 51060861 in words is "fifty-one million, sixty thousand, eight hundred sixty-one".