2151450073 has 4 divisors (see below), whose sum is σ = 2167873488. Its totient is φ = 2135026660.

The previous prime is 2151450017. The next prime is 2151450083. The reversal of 2151450073 is 3700541512.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151450073 is a prime.

It is a super-2 number, since 2×2151450073² = 9257474833223410658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151450083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8211511 + ... + 8211772.

It is an arithmetic number, because the mean of its divisors is an integer number (541968372).

Almost surely, 2^2151450073 is an apocalyptic number.

It is an amenable number.

2151450073 is a deficient number, since it is larger than the sum of its proper divisors (16423415).

2151450073 is a wasteful number, since it uses less digits than its factorization.

2151450073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16423414.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 2151450073 is about 46383.7263811350. The cubic root of 2151450073 is about 1290.9529790918.

Adding to 2151450073 its reverse (3700541512), we get a palindrome (5851991585).

The spelling of 2151450073 in words is "two billion, one hundred fifty-one million, four hundred fifty thousand, seventy-three".