1972603553 has 2 divisors, whose sum is σ = 1972603554. Its totient is φ = 1972603552.

The previous prime is 1972603547. The next prime is 1972603559. The reversal of 1972603553 is 3553062791.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1972603547) and next prime (1972603559).

It can be written as a sum of positive squares in only one way, i.e., 1252593664 + 720009889 = 35392^2 + 26833^2 .

It is a cyclic number.

It is not a de Polignac number, because 1972603553 - 2⁴ = 1972603537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1972603553.

It is not a weakly prime, because it can be changed into another prime (1972603559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986301776 + 986301777.

It is an arithmetic number, because the mean of its divisors is an integer number (986301777).

Almost surely, 2^1972603553 is an apocalyptic number.

It is an amenable number.

1972603553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972603553 is an equidigital number, since it uses as much as digits as its factorization.

1972603553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 41.

The square root of 1972603553 is about 44414.0017674607. The cubic root of 1972603553 is about 1254.1416866293.

The spelling of 1972603553 in words is "one billion, nine hundred seventy-two million, six hundred three thousand, five hundred fifty-three".