16121461 has 2 divisors, whose sum is σ = 16121462. Its totient is φ = 16121460.

The previous prime is 16121453. The next prime is 16121467. The reversal of 16121461 is 16412161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13734436 + 2387025 = 3706^2 + 1545^2 .

It is a cyclic number.

It is not a de Polignac number, because 16121461 - 2³ = 16121453 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16121467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8060730 + 8060731.

It is an arithmetic number, because the mean of its divisors is an integer number (8060731).

Almost surely, 2^16121461 is an apocalyptic number.

It is an amenable number.

16121461 is a deficient number, since it is larger than the sum of its proper divisors (1).

16121461 is an equidigital number, since it uses as much as digits as its factorization.

16121461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 22.

The square root of 16121461 is about 4015.1539198392. The cubic root of 16121461 is about 252.6202335602.

The spelling of 16121461 in words is "sixteen million, one hundred twenty-one thousand, four hundred sixty-one".