3755475821 has 8 divisors (see below), whose sum is σ = 3847203360. Its totient is φ = 3663947952.

The previous prime is 3755475781. The next prime is 3755475853. The reversal of 3755475821 is 1285745573.

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 3755475821 - 2¹⁴ = 3755459437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3755475221) 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, 11486 + ... + 87423.

It is an arithmetic number, because the mean of its divisors is an integer number (480900420).

Almost surely, 2^3755475821 is an apocalyptic number.

It is an amenable number.

3755475821 is a deficient number, since it is larger than the sum of its proper divisors (91727539).

3755475821 is an equidigital number, since it uses as much as digits as its factorization.

3755475821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99835.

The product of its digits is 1176000, while the sum is 47.

The square root of 3755475821 is about 61281.9371511704. The cubic root of 3755475821 is about 1554.3720918221.

The spelling of 3755475821 in words is "three billion, seven hundred fifty-five million, four hundred seventy-five thousand, eight hundred twenty-one".