4145551331 has 4 divisors (see below), whose sum is σ = 4146067464. Its totient is φ = 4145035200.

The previous prime is 4145551327. The next prime is 4145551343. The reversal of 4145551331 is 1331555414.

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 4145551331 - 2² = 4145551327 is a prime.

It is a super-2 number, since 2×4145551331² = 34371191675911743122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4145551301) 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, 245825 + ... + 262146.

It is an arithmetic number, because the mean of its divisors is an integer number (1036516866).

Almost surely, 2^4145551331 is an apocalyptic number.

4145551331 is a deficient number, since it is larger than the sum of its proper divisors (516133).

4145551331 is an equidigital number, since it uses as much as digits as its factorization.

4145551331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516132.

The product of its digits is 18000, while the sum is 32.

The square root of 4145551331 is about 64385.9560075021. The cubic root of 4145551331 is about 1606.4261520268.

The spelling of 4145551331 in words is "four billion, one hundred forty-five million, five hundred fifty-one thousand, three hundred thirty-one".