55757643 has 8 divisors (see below), whose sum is σ = 75746448. Its totient is φ = 36470304.

The previous prime is 55757641. The next prime is 55757659. The reversal of 55757643 is 34675755.

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

It is not a de Polignac number, because 55757643 - 2¹ = 55757641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55757595 and 55757604.

It is not an unprimeable number, because it can be changed into a prime (55757641) 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, 175180 + ... + 175497.

It is an arithmetic number, because the mean of its divisors is an integer number (9468306).

Almost surely, 2^55757643 is an apocalyptic number.

55757643 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

55757643 is a deficient number, since it is larger than the sum of its proper divisors (19988805).

55757643 is a wasteful number, since it uses less digits than its factorization.

55757643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350733.

The product of its digits is 441000, while the sum is 42.

The square root of 55757643 is about 7467.1040571295. The cubic root of 55757643 is about 382.0335190748.

The spelling of 55757643 in words is "fifty-five million, seven hundred fifty-seven thousand, six hundred forty-three".