51188090 has 32 divisors (see below), whose sum is σ = 99368640. Its totient is φ = 18921600.

The previous prime is 51188077. The next prime is 51188101. The reversal of 51188090 is 9088115.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4505 + ... + 11075.

It is an arithmetic number, because the mean of its divisors is an integer number (3105270).

Almost surely, 2^51188090 is an apocalyptic number.

51188090 is a deficient number, since it is larger than the sum of its proper divisors (48180550).

51188090 is a wasteful number, since it uses less digits than its factorization.

51188090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6638.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 51188090 is about 7154.5852430452. The cubic root of 51188090 is about 371.2983121005.

The spelling of 51188090 in words is "fifty-one million, one hundred eighty-eight thousand, ninety".