1203553061 has 2 divisors, whose sum is σ = 1203553062. Its totient is φ = 1203553060.

The previous prime is 1203553033. The next prime is 1203553121. The reversal of 1203553061 is 1603553021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1162400836 + 41152225 = 34094^2 + 6415^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203553061 - 2²² = 1199358757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1203553061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203553261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601776530 + 601776531.

It is an arithmetic number, because the mean of its divisors is an integer number (601776531).

Almost surely, 2^1203553061 is an apocalyptic number.

It is an amenable number.

1203553061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203553061 is an equidigital number, since it uses as much as digits as its factorization.

1203553061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 1203553061 is about 34692.2622640842. The cubic root of 1203553061 is about 1063.7063387313.

The spelling of 1203553061 in words is "one billion, two hundred three million, five hundred fifty-three thousand, sixty-one".