51106651 has 4 divisors (see below), whose sum is σ = 51161904. Its totient is φ = 51051400.

The previous prime is 51106639. The next prime is 51106663. The reversal of 51106651 is 15660115.

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

It is an interprime number because it is at equal distance from previous prime (51106639) and next prime (51106663).

It is a cyclic number.

It is not a de Polignac number, because 51106651 - 2¹³ = 51098459 is a prime.

It is a super-2 number, since 2×51106651² = 5223779552871602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51106691) 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, 26215 + ... + 28096.

It is an arithmetic number, because the mean of its divisors is an integer number (12790476).

Almost surely, 2^51106651 is an apocalyptic number.

51106651 is a deficient number, since it is larger than the sum of its proper divisors (55253).

51106651 is an equidigital number, since it uses as much as digits as its factorization.

51106651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55252.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 51106651 is about 7148.8915924079. The cubic root of 51106651 is about 371.1012987360.

Adding to 51106651 its reverse (15660115), we get a palindrome (66766766).

The spelling of 51106651 in words is "fifty-one million, one hundred six thousand, six hundred fifty-one".