51461554 has 4 divisors (see below), whose sum is σ = 77192334. Its totient is φ = 25730776.

The previous prime is 51461549. The next prime is 51461591. The reversal of 51461554 is 45516415.

51461554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 47983329 + 3478225 = 6927^2 + 1865^2 .

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 as a sum of consecutive naturals, namely, 12865387 + ... + 12865390.

Almost surely, 2^51461554 is an apocalyptic number.

51461554 is a deficient number, since it is larger than the sum of its proper divisors (25730780).

51461554 is a wasteful number, since it uses less digits than its factorization.

51461554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25730779.

The product of its digits is 12000, while the sum is 31.

The square root of 51461554 is about 7173.6708873491. The cubic root of 51461554 is about 371.9583383027.

Adding to 51461554 its reverse (45516415), we get a palindrome (96977969).

The spelling of 51461554 in words is "fifty-one million, four hundred sixty-one thousand, five hundred fifty-four".