51453345 has 16 divisors (see below), whose sum is σ = 83486592. Its totient is φ = 27054720.

The previous prime is 51453343. The next prime is 51453361. The reversal of 51453345 is 54335415.

It is not a de Polignac number, because 51453345 - 2¹ = 51453343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51453343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23092 + ... + 25221.

It is an arithmetic number, because the mean of its divisors is an integer number (5217912).

Almost surely, 2^51453345 is an apocalyptic number.

It is an amenable number.

51453345 is a deficient number, since it is larger than the sum of its proper divisors (32033247).

51453345 is a wasteful number, since it uses less digits than its factorization.

51453345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48392.

The product of its digits is 18000, while the sum is 30.

The square root of 51453345 is about 7173.0987027923. The cubic root of 51453345 is about 371.9385593406.

The spelling of 51453345 in words is "fifty-one million, four hundred fifty-three thousand, three hundred forty-five".