2961557 has 2 divisors, whose sum is σ = 2961558. Its totient is φ = 2961556.

The previous prime is 2961533. The next prime is 2961577. The reversal of 2961557 is 7551692.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1825201 + 1136356 = 1351^2 + 1066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2961557 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2961527) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1480778 + 1480779.

It is an arithmetic number, because the mean of its divisors is an integer number (1480779).

2^2961557 is an apocalyptic number.

It is an amenable number.

2961557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2961557 is an equidigital number, since it uses as much as digits as its factorization.

2961557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 35.

The square root of 2961557 is about 1720.9174878535. The cubic root of 2961557 is about 143.6062578258.

The spelling of 2961557 in words is "two million, nine hundred sixty-one thousand, five hundred fifty-seven".