51461207 has 4 divisors (see below), whose sum is σ = 58812816. Its totient is φ = 44109600.

The previous prime is 51461203. The next prime is 51461231. The reversal of 51461207 is 70216415.

51461207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51461207 - 2² = 51461203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51461203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3675794 + ... + 3675807.

It is an arithmetic number, because the mean of its divisors is an integer number (14703204).

Almost surely, 2^51461207 is an apocalyptic number.

51461207 is a deficient number, since it is larger than the sum of its proper divisors (7351609).

51461207 is an equidigital number, since it uses as much as digits as its factorization.

51461207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7351608.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 51461207 is about 7173.6467016435. The cubic root of 51461207 is about 371.9575022751.

The spelling of 51461207 in words is "fifty-one million, four hundred sixty-one thousand, two hundred seven".