2172037461 has 16 divisors (see below), whose sum is σ = 3226549248. Its totient is φ = 1288377200.

The previous prime is 2172037433. The next prime is 2172037471. The reversal of 2172037461 is 1647302712.

It is not a de Polignac number, because 2172037461 - 2⁶ = 2172037397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172037411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 698655 + ... + 701756.

It is an arithmetic number, because the mean of its divisors is an integer number (201659328).

Almost surely, 2^2172037461 is an apocalyptic number.

It is an amenable number.

2172037461 is a deficient number, since it is larger than the sum of its proper divisors (1054511787).

2172037461 is a wasteful number, since it uses less digits than its factorization.

2172037461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400472.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 2172037461 is about 46605.1226905369. The cubic root of 2172037461 is about 1295.0576562832.

The spelling of 2172037461 in words is "two billion, one hundred seventy-two million, thirty-seven thousand, four hundred sixty-one".