51090667 has 4 divisors (see below), whose sum is σ = 51125200. Its totient is φ = 51056136.

The previous prime is 51090653. The next prime is 51090671. The reversal of 51090667 is 76609015.

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 51090667 - 2¹¹ = 51088619 is a prime.

It is a super-2 number, since 2×51090667² = 5220512509009778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51090607) 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, 14943 + ... + 18040.

It is an arithmetic number, because the mean of its divisors is an integer number (12781300).

Almost surely, 2^51090667 is an apocalyptic number.

51090667 is a deficient number, since it is larger than the sum of its proper divisors (34533).

51090667 is a wasteful number, since it uses less digits than its factorization.

51090667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34532.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 51090667 is about 7147.7735694410. The cubic root of 51090667 is about 371.0626064358.

The spelling of 51090667 in words is "fifty-one million, ninety thousand, six hundred sixty-seven".