1432555561 has 2 divisors, whose sum is σ = 1432555562. Its totient is φ = 1432555560.

The previous prime is 1432555549. The next prime is 1432555567. The reversal of 1432555561 is 1655552341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1280279961 + 152275600 = 35781^2 + 12340^2 .

It is a cyclic number.

It is not a de Polignac number, because 1432555561 - 2¹⁷ = 1432424489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1432555561.

It is not a weakly prime, because it can be changed into another prime (1432555567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 716277780 + 716277781.

It is an arithmetic number, because the mean of its divisors is an integer number (716277781).

Almost surely, 2^1432555561 is an apocalyptic number.

It is an amenable number.

1432555561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1432555561 is an equidigital number, since it uses as much as digits as its factorization.

1432555561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90000, while the sum is 37.

The square root of 1432555561 is about 37849.1157228277. The cubic root of 1432555561 is about 1127.2939034608.

The spelling of 1432555561 in words is "one billion, four hundred thirty-two million, five hundred fifty-five thousand, five hundred sixty-one".