51549379 has 8 divisors (see below), whose sum is σ = 58997088. Its totient is φ = 44122560.

The previous prime is 51549361. The next prime is 51549397. The reversal of 51549379 is 97394515.

It is an interprime number because it is at equal distance from previous prime (51549361) and next prime (51549397).

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 51549379 - 2⁵ = 51549347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51549319) 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, 489 + ... + 10165.

It is an arithmetic number, because the mean of its divisors is an integer number (7374636).

Almost surely, 2^51549379 is an apocalyptic number.

51549379 is a deficient number, since it is larger than the sum of its proper divisors (7447709).

51549379 is an equidigital number, since it uses as much as digits as its factorization.

51549379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10445.

The product of its digits is 170100, while the sum is 43.

The square root of 51549379 is about 7179.7896208733. The cubic root of 51549379 is about 372.1698144609.

It can be divided in two parts, 515 and 49379, that added together give a palindrome (49894).

The spelling of 51549379 in words is "fifty-one million, five hundred forty-nine thousand, three hundred seventy-nine".