2151241405 has 8 divisors (see below), whose sum is σ = 2693728512. Its totient is φ = 1646167248.

The previous prime is 2151241403. The next prime is 2151241409. The reversal of 2151241405 is 5041421512.

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 2151241405 - 2¹ = 2151241403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2151241405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151241403) 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, 9353109 + ... + 9353338.

It is an arithmetic number, because the mean of its divisors is an integer number (336716064).

Almost surely, 2^2151241405 is an apocalyptic number.

It is an amenable number.

2151241405 is a deficient number, since it is larger than the sum of its proper divisors (542487107).

2151241405 is a wasteful number, since it uses less digits than its factorization.

2151241405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18706475.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2151241405 is about 46381.4769600969. The cubic root of 2151241405 is about 1290.9112414611.

Adding to 2151241405 its reverse (5041421512), we get a palindrome (7192662917).

The spelling of 2151241405 in words is "two billion, one hundred fifty-one million, two hundred forty-one thousand, four hundred five".