2153211501 has 8 divisors (see below), whose sum is σ = 3281084224. Its totient is φ = 1230406560.

The previous prime is 2153211479. The next prime is 2153211509. The reversal of 2153211501 is 1051123512.

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

It is not a de Polignac number, because 2153211501 - 2²⁷ = 2018993773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 102533881 = 2153211501 / (2 + 1 + 5 + 3 + 2 + 1 + 1 + 5 + 0 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153211509) 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, 51266920 + ... + 51266961.

It is an arithmetic number, because the mean of its divisors is an integer number (410135528).

Almost surely, 2^2153211501 is an apocalyptic number.

2153211501 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2153211501 is a deficient number, since it is larger than the sum of its proper divisors (1127872723).

2153211501 is a wasteful number, since it uses less digits than its factorization.

2153211501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102533891.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 2153211501 is about 46402.7100609436. The cubic root of 2153211501 is about 1291.3051912221.

It can be divided in two parts, 21532 and 11501, that added together give a palindrome (33033).

The spelling of 2153211501 in words is "two billion, one hundred fifty-three million, two hundred eleven thousand, five hundred one".