51545005 has 8 divisors (see below), whose sum is σ = 65109600. Its totient is φ = 39065616.

The previous prime is 51544957. The next prime is 51545023. The reversal of 51545005 is 50054515.

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

It is a cyclic number.

It is not a de Polignac number, because 51545005 - 2⁷ = 51544877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271195 + ... + 271384.

It is an arithmetic number, because the mean of its divisors is an integer number (8138700).

Almost surely, 2^51545005 is an apocalyptic number.

It is an amenable number.

51545005 is a deficient number, since it is larger than the sum of its proper divisors (13564595).

51545005 is a wasteful number, since it uses less digits than its factorization.

51545005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542603.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 51545005 is about 7179.4850093861. The cubic root of 51545005 is about 372.1592878755.

The spelling of 51545005 in words is "fifty-one million, five hundred forty-five thousand, five".