2162157001 has 3 divisors (see below), whose sum is σ = 2162203501. Its totient is φ = 2162110502.

The previous prime is 2162156993. The next prime is 2162157007. The reversal of 2162157001 is 1007512612.

The square root of 2162157001 is 46499.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2162157001 - 2³ = 2162156993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2162157007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23250 + ... + 69748.

Almost surely, 2^2162157001 is an apocalyptic number.

2162157001 is the 46499-th square number.

2162157001 is the 23250-th centered octagonal number.

It is an amenable number.

2162157001 is a deficient number, since it is larger than the sum of its proper divisors (46500).

2162157001 is an frugal number, since it uses more digits than its factorization.

2162157001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92998 (or 46499 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The cubic root of 2162157001 is about 1293.0909595515.

Multiplying 2162157001 by its sum of digits (25), we get a square (54053925025 = 232495²).

Adding to 2162157001 its reverse (1007512612), we get a palindrome (3169669613).

The spelling of 2162157001 in words is "two billion, one hundred sixty-two million, one hundred fifty-seven thousand, one".