55312732749 has 8 divisors (see below), whose sum is σ = 73758102592. Its totient is φ = 36871259040.

The previous prime is 55312732747. The next prime is 55312732757. The reversal of 55312732749 is 94723721355.

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

It is not a de Polignac number, because 55312732749 - 2¹ = 55312732747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55312732698 and 55312732707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55312732747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 940744 + ... + 997809.

It is an arithmetic number, because the mean of its divisors is an integer number (9219762824).

Almost surely, 2^55312732749 is an apocalyptic number.

It is an amenable number.

55312732749 is a deficient number, since it is larger than the sum of its proper divisors (18445369843).

55312732749 is a wasteful number, since it uses less digits than its factorization.

55312732749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948067.

The product of its digits is 1587600, while the sum is 48.

The spelling of 55312732749 in words is "fifty-five billion, three hundred twelve million, seven hundred thirty-two thousand, seven hundred forty-nine".