51155452 has 6 divisors (see below), whose sum is σ = 89522048. Its totient is φ = 25577724.

The previous prime is 51155443. The next prime is 51155453. The reversal of 51155452 is 25455115.

51155452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51155452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51155453) 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 as a sum of consecutive naturals, namely, 6394428 + ... + 6394435.

Almost surely, 2^51155452 is an apocalyptic number.

It is an amenable number.

51155452 is a deficient number, since it is larger than the sum of its proper divisors (38366596).

51155452 is a wasteful number, since it uses less digits than its factorization.

51155452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12788867 (or 12788865 counting only the distinct ones).

The product of its digits is 5000, while the sum is 28.

The square root of 51155452 is about 7152.3039644579. The cubic root of 51155452 is about 371.2193809088.

The spelling of 51155452 in words is "fifty-one million, one hundred fifty-five thousand, four hundred fifty-two".