51445367 has 4 divisors (see below), whose sum is σ = 51499536. Its totient is φ = 51391200.

The previous prime is 51445357. The next prime is 51445421. The reversal of 51445367 is 76354415.

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 51445367 - 2¹⁴ = 51428983 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 (51445327) 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, 25634 + ... + 27567.

It is an arithmetic number, because the mean of its divisors is an integer number (12874884).

Almost surely, 2^51445367 is an apocalyptic number.

51445367 is a deficient number, since it is larger than the sum of its proper divisors (54169).

51445367 is an equidigital number, since it uses as much as digits as its factorization.

51445367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54168.

The product of its digits is 50400, while the sum is 35.

The square root of 51445367 is about 7172.5425756840. The cubic root of 51445367 is about 371.9193349397.

The spelling of 51445367 in words is "fifty-one million, four hundred forty-five thousand, three hundred sixty-seven".