1472639561 has 8 divisors (see below), whose sum is σ = 1539997440. Its totient is φ = 1405559232.

The previous prime is 1472639551. The next prime is 1472639591. The reversal of 1472639561 is 1659362741.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1472639561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1472639551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58496 + ... + 79793.

It is an arithmetic number, because the mean of its divisors is an integer number (192499680).

Almost surely, 2^1472639561 is an apocalyptic number.

It is an amenable number.

1472639561 is a deficient number, since it is larger than the sum of its proper divisors (67357879).

1472639561 is a wasteful number, since it uses less digits than its factorization.

1472639561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138775.

The product of its digits is 272160, while the sum is 44.

The square root of 1472639561 is about 38374.9861368053. The cubic root of 1472639561 is about 1137.7115168551.

The spelling of 1472639561 in words is "one billion, four hundred seventy-two million, six hundred thirty-nine thousand, five hundred sixty-one".