51906237 has 8 divisors (see below), whose sum is σ = 69271104. Its totient is φ = 34572768.

The previous prime is 51906229. The next prime is 51906251. The reversal of 51906237 is 73260915.

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

It is not a de Polignac number, because 51906237 - 2³ = 51906229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51906198 and 51906207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51906137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3673 + ... + 10830.

It is an arithmetic number, because the mean of its divisors is an integer number (8658888).

Almost surely, 2^51906237 is an apocalyptic number.

It is an amenable number.

51906237 is a deficient number, since it is larger than the sum of its proper divisors (17364867).

51906237 is a wasteful number, since it uses less digits than its factorization.

51906237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15699.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 51906237 is about 7204.5983232933. The cubic root of 51906237 is about 373.0266400387.

The spelling of 51906237 in words is "fifty-one million, nine hundred six thousand, two hundred thirty-seven".