16972901 has 4 divisors (see below), whose sum is σ = 18515904. Its totient is φ = 15429900.

The previous prime is 16972889. The next prime is 16972931. The reversal of 16972901 is 10927961.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10927961 = 11 ⋅993451.

It is a cyclic number.

It is not a de Polignac number, because 16972901 - 2¹⁴ = 16956517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16972931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771485 + ... + 771506.

It is an arithmetic number, because the mean of its divisors is an integer number (4628976).

Almost surely, 2^16972901 is an apocalyptic number.

16972901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16972901 is a deficient number, since it is larger than the sum of its proper divisors (1543003).

16972901 is a wasteful number, since it uses less digits than its factorization.

16972901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543002.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 16972901 is about 4119.8180785078. The cubic root of 16972901 is about 256.9914606014.

The spelling of 16972901 in words is "sixteen million, nine hundred seventy-two thousand, nine hundred one".