51111006 has 8 divisors (see below), whose sum is σ = 102222024. Its totient is φ = 17037000.

The previous prime is 51110999. The next prime is 51111013. The reversal of 51111006 is 60011115.

It is an interprime number because it is at equal distance from previous prime (51110999) and next prime (51111013).

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

51111006 is an admirable number.

It is a super-2 number, since 2×51111006² = 5224669868664072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4259245 + ... + 4259256.

It is an arithmetic number, because the mean of its divisors is an integer number (12777753).

Almost surely, 2^51111006 is an apocalyptic number.

51111006 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51111006 is a wasteful number, since it uses less digits than its factorization.

51111006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8518506.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 51111006 is about 7149.1961785924. The cubic root of 51111006 is about 371.1118394401. Note that the first 3 decimals are identical.

The spelling of 51111006 in words is "fifty-one million, one hundred eleven thousand, six".