51537545 has 8 divisors (see below), whose sum is σ = 61885824. Its totient is φ = 41202864.

The previous prime is 51537529. The next prime is 51537547. The reversal of 51537545 is 54573515.

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 51537545 - 2⁴ = 51537529 is a prime.

It is a super-2 number, since 2×51537545² = 5312237089254050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51537547) 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 7 ways as a sum of consecutive naturals, for example, 9182 + ... + 13688.

It is an arithmetic number, because the mean of its divisors is an integer number (7735728).

Almost surely, 2^51537545 is an apocalyptic number.

It is an amenable number.

51537545 is a deficient number, since it is larger than the sum of its proper divisors (10348279).

51537545 is a wasteful number, since it uses less digits than its factorization.

51537545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6799.

The product of its digits is 52500, while the sum is 35.

The square root of 51537545 is about 7178.9654547156. The cubic root of 51537545 is about 372.1413330661.

The spelling of 51537545 in words is "fifty-one million, five hundred thirty-seven thousand, five hundred forty-five".