51490026 has 32 divisors (see below), whose sum is σ = 130769280. Its totient is φ = 14711328.

The previous prime is 51490013. The next prime is 51490037. The reversal of 51490026 is 62009415.

51490026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67731 + ... + 68486.

It is an arithmetic number, because the mean of its divisors is an integer number (4086540).

Almost surely, 2^51490026 is an apocalyptic number.

51490026 is an abundant number, since it is smaller than the sum of its proper divisors (79279254).

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

51490026 is a wasteful number, since it uses less digits than its factorization.

51490026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136235 (or 136229 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 51490026 is about 7175.6550920456. The cubic root of 51490026 is about 372.0269231295.

The spelling of 51490026 in words is "fifty-one million, four hundred ninety thousand, twenty-six".