51453215 has 8 divisors (see below), whose sum is σ = 67357008. Its totient is φ = 37420480.

The previous prime is 51453187. The next prime is 51453217. The reversal of 51453215 is 51235415.

51453215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51453215 - 2⁸ = 51452959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51453217) 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 7 ways as a sum of consecutive naturals, for example, 467702 + ... + 467811.

It is an arithmetic number, because the mean of its divisors is an integer number (8419626).

Almost surely, 2^51453215 is an apocalyptic number.

51453215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51453215 is a deficient number, since it is larger than the sum of its proper divisors (15903793).

51453215 is a wasteful number, since it uses less digits than its factorization.

51453215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935529.

The product of its digits is 3000, while the sum is 26.

The square root of 51453215 is about 7173.0896411519. The cubic root of 51453215 is about 371.9382460986.

The spelling of 51453215 in words is "fifty-one million, four hundred fifty-three thousand, two hundred fifteen".