1972577559 has 16 divisors (see below), whose sum is σ = 2705773280. Its totient is φ = 1277337600.

The previous prime is 1972577531. The next prime is 1972577573. The reversal of 1972577559 is 9557752791.

It is not a de Polignac number, because 1972577559 - 2¹¹ = 1972575511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1972577499 and 1972577508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972577459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51927 + ... + 81495.

It is an arithmetic number, because the mean of its divisors is an integer number (169110830).

Almost surely, 2^1972577559 is an apocalyptic number.

1972577559 is a deficient number, since it is larger than the sum of its proper divisors (733195721).

1972577559 is a wasteful number, since it uses less digits than its factorization.

1972577559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30210.

The product of its digits is 6945750, while the sum is 57.

The square root of 1972577559 is about 44413.7091335547. The cubic root of 1972577559 is about 1254.1361777842.

The spelling of 1972577559 in words is "one billion, nine hundred seventy-two million, five hundred seventy-seven thousand, five hundred fifty-nine".