1611225541 has 8 divisors (see below), whose sum is σ = 1708862400. Its totient is φ = 1513906368.

The previous prime is 1611225481. The next prime is 1611225557. The reversal of 1611225541 is 1455221161.

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-1611225541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611225571) 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, 68931 + ... + 89296.

It is an arithmetic number, because the mean of its divisors is an integer number (213607800).

Almost surely, 2^1611225541 is an apocalyptic number.

It is an amenable number.

1611225541 is a deficient number, since it is larger than the sum of its proper divisors (97636859).

1611225541 is a wasteful number, since it uses less digits than its factorization.

1611225541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158843.

The product of its digits is 2400, while the sum is 28.

The square root of 1611225541 is about 40140.0740034196. The cubic root of 1611225541 is about 1172.3360299161.

The spelling of 1611225541 in words is "one billion, six hundred eleven million, two hundred twenty-five thousand, five hundred forty-one".