51020110 has 16 divisors (see below), whose sum is σ = 94799232. Its totient is φ = 19749600.

The previous prime is 51020107. The next prime is 51020117. The reversal of 51020110 is 1102015.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51020117) 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, 81981 + ... + 82600.

It is an arithmetic number, because the mean of its divisors is an integer number (5924952).

Almost surely, 2^51020110 is an apocalyptic number.

51020110 is a deficient number, since it is larger than the sum of its proper divisors (43779122).

51020110 is a wasteful number, since it uses less digits than its factorization.

51020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164619.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 51020110 is about 7142.8362713981. The cubic root of 51020110 is about 370.8917133466.

Adding to 51020110 its reverse (1102015), we get a palindrome (52122125).

The spelling of 51020110 in words is "fifty-one million, twenty thousand, one hundred ten".