51261154 has 48 divisors (see below), whose sum is σ = 98065080. Its totient is φ = 19944960.

The previous prime is 51261149. The next prime is 51261157. The reversal of 51261154 is 45116215.

It is a happy number.

51261154 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 4 ways, for example, as 50083929 + 1177225 = 7077^2 + 1085^2 .

It is not an unprimeable number, because it can be changed into a prime (51261157) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 47784 + ... + 48844.

Almost surely, 2^51261154 is an apocalyptic number.

51261154 is a deficient number, since it is larger than the sum of its proper divisors (46803926).

51261154 is a wasteful number, since it uses less digits than its factorization.

51261154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123 (or 1116 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 51261154 is about 7159.6895184079. The cubic root of 51261154 is about 371.4748873069.

Adding to 51261154 its reverse (45116215), we get a palindrome (96377369).

It can be divided in two parts, 51261 and 154, that added together give a palindrome (51415).

The spelling of 51261154 in words is "fifty-one million, two hundred sixty-one thousand, one hundred fifty-four".