51237545 has 8 divisors (see below), whose sum is σ = 61570824. Its totient is φ = 40932864.

The previous prime is 51237539. The next prime is 51237581. The reversal of 51237545 is 54573215.

51237545 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 21086464 + 30151081 = 4592^2 + 5491^2 .

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 51237545 - 2⁶ = 51237481 is a prime.

It is a Duffinian 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, 2984 + ... + 10553.

It is an arithmetic number, because the mean of its divisors is an integer number (7696353).

Almost surely, 2^51237545 is an apocalyptic number.

It is an amenable number.

51237545 is a deficient number, since it is larger than the sum of its proper divisors (10333279).

51237545 is a wasteful number, since it uses less digits than its factorization.

51237545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14299.

The product of its digits is 21000, while the sum is 32.

The square root of 51237545 is about 7158.0405838470. The cubic root of 51237545 is about 371.4178493312.

The spelling of 51237545 in words is "fifty-one million, two hundred thirty-seven thousand, five hundred forty-five".