51260111 has 4 divisors (see below), whose sum is σ = 58582992. Its totient is φ = 43937232.

The previous prime is 51260107. The next prime is 51260137. The reversal of 51260111 is 11106215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51260111 - 2² = 51260107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51260111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51260101) 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, 3661430 + ... + 3661443.

It is an arithmetic number, because the mean of its divisors is an integer number (14645748).

Almost surely, 2^51260111 is an apocalyptic number.

51260111 is a deficient number, since it is larger than the sum of its proper divisors (7322881).

51260111 is an equidigital number, since it uses as much as digits as its factorization.

51260111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7322880.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 51260111 is about 7159.6166796833. The cubic root of 51260111 is about 371.4723678491.

Adding to 51260111 its reverse (11106215), we get a palindrome (62366326).

The spelling of 51260111 in words is "fifty-one million, two hundred sixty thousand, one hundred eleven".