51480011 has 4 divisors (see below), whose sum is σ = 56160024. Its totient is φ = 46800000.

The previous prime is 51480001. The next prime is 51480019. The reversal of 51480011 is 11008415.

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 51480011 - 2¹⁸ = 51217867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51480019) 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, 2339990 + ... + 2340011.

It is an arithmetic number, because the mean of its divisors is an integer number (14040006).

Almost surely, 2^51480011 is an apocalyptic number.

51480011 is a deficient number, since it is larger than the sum of its proper divisors (4680013).

51480011 is a wasteful number, since it uses less digits than its factorization.

51480011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680012.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 51480011 is about 7174.9572124160. The cubic root of 51480011 is about 372.0028013625.

Adding to 51480011 its reverse (11008415), we get a palindrome (62488426).

The spelling of 51480011 in words is "fifty-one million, four hundred eighty thousand, eleven".