1537961 has 2 divisors, whose sum is σ = 1537962. Its totient is φ = 1537960.

The previous prime is 1537937. The next prime is 1537967. The reversal of 1537961 is 1697351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1537600 + 361 = 1240^2 + 19^2 .

It is an emirp because it is prime and its reverse (1697351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1537961 - 2⁶ = 1537897 is a prime.

It is not a weakly prime, because it can be changed into another prime (1537967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 768980 + 768981.

It is an arithmetic number, because the mean of its divisors is an integer number (768981).

2^1537961 is an apocalyptic number.

It is an amenable number.

1537961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1537961 is an equidigital number, since it uses as much as digits as its factorization.

1537961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 32.

The square root of 1537961 is about 1240.1455559732. The cubic root of 1537961 is about 115.4290463305.

The spelling of 1537961 in words is "one million, five hundred thirty-seven thousand, nine hundred sixty-one".