51542327 has 4 divisors (see below), whose sum is σ = 51698376. Its totient is φ = 51386280.

The previous prime is 51542321. The next prime is 51542347. The reversal of 51542327 is 72324515.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51542327 - 2⁴ = 51542311 is a prime.

It is a super-2 number, since 2×51542327² = 5313222945149858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51542327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51542321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77528 + ... + 78189.

It is an arithmetic number, because the mean of its divisors is an integer number (12924594).

Almost surely, 2^51542327 is an apocalyptic number.

51542327 is a deficient number, since it is larger than the sum of its proper divisors (156049).

51542327 is a wasteful number, since it uses less digits than its factorization.

51542327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156048.

The product of its digits is 8400, while the sum is 29.

The square root of 51542327 is about 7179.2985033358. The cubic root of 51542327 is about 372.1528426352.

The spelling of 51542327 in words is "fifty-one million, five hundred forty-two thousand, three hundred twenty-seven".