51240153 has 16 divisors (see below), whose sum is σ = 70904960. Its totient is φ = 32887296.

The previous prime is 51240121. The next prime is 51240221. The reversal of 51240153 is 35104215.

It is not a de Polignac number, because 51240153 - 2⁵ = 51240121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51240103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8388 + ... + 13146.

It is an arithmetic number, because the mean of its divisors is an integer number (4431560).

Almost surely, 2^51240153 is an apocalyptic number.

It is an amenable number.

51240153 is a deficient number, since it is larger than the sum of its proper divisors (19664807).

51240153 is a wasteful number, since it uses less digits than its factorization.

51240153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4896.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51240153 is about 7158.2227542875. Note that the first 3 decimals coincide. The cubic root of 51240153 is about 371.4241509688.

Adding to 51240153 its reverse (35104215), we get a palindrome (86344368).

The spelling of 51240153 in words is "fifty-one million, two hundred forty thousand, one hundred fifty-three".