51140554 has 8 divisors (see below), whose sum is σ = 76894308. Its totient is φ = 25509120.

The previous prime is 51140491. The next prime is 51140563. The reversal of 51140554 is 45504115.

It is a happy number.

51140554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 47817225 + 3323329 = 6915^2 + 1823^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 29527 + ... + 31210.

Almost surely, 2^51140554 is an apocalyptic number.

51140554 is a deficient number, since it is larger than the sum of its proper divisors (25753754).

51140554 is a wasteful number, since it uses less digits than its factorization.

51140554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61160.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 51140554 is about 7151.2624060371. The cubic root of 51140554 is about 371.1833406753.

Adding to 51140554 its reverse (45504115), we get a palindrome (96644669).

The spelling of 51140554 in words is "fifty-one million, one hundred forty thousand, five hundred fifty-four".