51698011 has 8 divisors (see below), whose sum is σ = 52704000. Its totient is φ = 50699880.

The previous prime is 51697963. The next prime is 51698029. The reversal of 51698011 is 11089615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51698011 - 2⁷ = 51697883 is a prime.

It is a super-2 number, since 2×51698011² = 5345368682712242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51698041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12300 + ... + 15958.

It is an arithmetic number, because the mean of its divisors is an integer number (6588000).

Almost surely, 2^51698011 is an apocalyptic number.

51698011 is a deficient number, since it is larger than the sum of its proper divisors (1005989).

51698011 is a wasteful number, since it uses less digits than its factorization.

51698011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 51698011 is about 7190.1328916787. The cubic root of 51698011 is about 372.5271628616.

The spelling of 51698011 in words is "fifty-one million, six hundred ninety-eight thousand, eleven".