51554245 has 8 divisors (see below), whose sum is σ = 61977240. Its totient is φ = 41168640.

The previous prime is 51554221. The next prime is 51554273. The reversal of 51554245 is 54245515.

51554245 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 188356 + 51365889 = 434^2 + 7167^2 .

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

It is not a de Polignac number, because 51554245 - 2⁷ = 51554117 is a prime.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 6216 + ... + 11905.

It is an arithmetic number, because the mean of its divisors is an integer number (7747155).

Almost surely, 2^51554245 is an apocalyptic number.

It is an amenable number.

51554245 is a deficient number, since it is larger than the sum of its proper divisors (10422995).

51554245 is a wasteful number, since it uses less digits than its factorization.

51554245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18695.

The product of its digits is 20000, while the sum is 31.

The square root of 51554245 is about 7180.1284807446. The cubic root of 51554245 is about 372.1815244069.

The spelling of 51554245 in words is "fifty-one million, five hundred fifty-four thousand, two hundred forty-five".