51591141 has 32 divisors (see below), whose sum is σ = 92494080. Its totient is φ = 27744768.

The previous prime is 51591121. The next prime is 51591149. The reversal of 51591141 is 14119515.

51591141 is a `hidden beast` number, since 515 + 9 + 1 + 141 = 666.

It is not a de Polignac number, because 51591141 - 2¹⁵ = 51558373 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51591149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4816 + ... + 11241.

It is an arithmetic number, because the mean of its divisors is an integer number (2890440).

Almost surely, 2^51591141 is an apocalyptic number.

51591141 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51591141 is a deficient number, since it is larger than the sum of its proper divisors (40902939).

51591141 is a wasteful number, since it uses less digits than its factorization.

51591141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16090 (or 16084 counting only the distinct ones).

The product of its digits is 900, while the sum is 27.

The square root of 51591141 is about 7182.6973345673. The cubic root of 51591141 is about 372.2702900359.

The spelling of 51591141 in words is "fifty-one million, five hundred ninety-one thousand, one hundred forty-one".