51481012 has 12 divisors (see below), whose sum is σ = 98282016. Its totient is φ = 23400440.

The previous prime is 51481007. The next prime is 51481021. The reversal of 51481012 is 21018415.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584968 + ... + 585055.

It is an arithmetic number, because the mean of its divisors is an integer number (8190168).

Almost surely, 2^51481012 is an apocalyptic number.

It is an amenable number.

51481012 is a deficient number, since it is larger than the sum of its proper divisors (46801004).

51481012 is a wasteful number, since it uses less digits than its factorization.

51481012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170038 (or 1170036 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 51481012 is about 7175.0269685904. The cubic root of 51481012 is about 372.0052124756.

Adding to 51481012 its reverse (21018415), we get a palindrome (72499427).

The spelling of 51481012 in words is "fifty-one million, four hundred eighty-one thousand, twelve".