2133155501 has 4 divisors (see below), whose sum is σ = 2173403772. Its totient is φ = 2092907232.

The previous prime is 2133155429. The next prime is 2133155509. The reversal of 2133155501 is 1055513312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1386445225 + 746710276 = 37235^2 + 27326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2133155501 is a prime.

It is a super-2 number, since 2×2133155501² = 9100704782893122002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133155509) 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, 20124056 + ... + 20124161.

It is an arithmetic number, because the mean of its divisors is an integer number (543350943).

Almost surely, 2^2133155501 is an apocalyptic number.

It is an amenable number.

2133155501 is a deficient number, since it is larger than the sum of its proper divisors (40248271).

2133155501 is an equidigital number, since it uses as much as digits as its factorization.

2133155501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40248270.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 2133155501 is about 46186.0964035715. The cubic root of 2133155501 is about 1287.2834086406.

Adding to 2133155501 its reverse (1055513312), we get a palindrome (3188668813).

The spelling of 2133155501 in words is "two billion, one hundred thirty-three million, one hundred fifty-five thousand, five hundred one".