1972541 has 2 divisors, whose sum is σ = 1972542. Its totient is φ = 1972540.

The previous prime is 1972511. The next prime is 1972567. The reversal of 1972541 is 1452791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1243225 + 729316 = 1115^2 + 854^2 .

It is an emirp because it is prime and its reverse (1452791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1972541 - 2¹⁰ = 1971517 is a prime.

It is a Chen prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1972511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986270 + 986271.

It is an arithmetic number, because the mean of its divisors is an integer number (986271).

2^1972541 is an apocalyptic number.

It is an amenable number.

1972541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972541 is an equidigital number, since it uses as much as digits as its factorization.

1972541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 29.

The square root of 1972541 is about 1404.4717868295. The cubic root of 1972541 is about 125.4128429842.

The spelling of 1972541 in words is "one million, nine hundred seventy-two thousand, five hundred forty-one".