51421154 has 8 divisors (see below), whose sum is σ = 77243868. Its totient is φ = 25673200.

The previous prime is 51421133. The next prime is 51421159. The reversal of 51421154 is 45112415.

51421154 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 38626225 + 12794929 = 6215^2 + 3577^2 .

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

It is not an unprimeable number, because it can be changed into a prime (51421159) 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 3 ways as a sum of consecutive naturals, for example, 16937 + ... + 19740.

Almost surely, 2^51421154 is an apocalyptic number.

51421154 is a deficient number, since it is larger than the sum of its proper divisors (25822714).

51421154 is a wasteful number, since it uses less digits than its factorization.

51421154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37380.

The product of its digits is 800, while the sum is 23.

The square root of 51421154 is about 7170.8544818592. The cubic root of 51421154 is about 371.8609772647.

Adding to 51421154 its reverse (45112415), we get a palindrome (96533569).

The spelling of 51421154 in words is "fifty-one million, four hundred twenty-one thousand, one hundred fifty-four".