1552056561 has 24 divisors (see below), whose sum is σ = 2452110336. Its totient is φ = 938161440.

The previous prime is 1552056557. The next prime is 1552056593. The reversal of 1552056561 is 1656502551.

1552056561 is a `hidden beast` number, since 1 + 552 + 0 + 56 + 56 + 1 = 666.

It is not a de Polignac number, because 1552056561 - 2² = 1552056557 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1552056161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17451 + ... + 58383.

It is an arithmetic number, because the mean of its divisors is an integer number (102171264).

Almost surely, 2^1552056561 is an apocalyptic number.

1552056561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1552056561 is a deficient number, since it is larger than the sum of its proper divisors (900053775).

1552056561 is a wasteful number, since it uses less digits than its factorization.

1552056561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41333 (or 41330 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 1552056561 is about 39396.1490630747. The cubic root of 1552056561 is about 1157.8061390779.

The spelling of 1552056561 in words is "one billion, five hundred fifty-two million, fifty-six thousand, five hundred sixty-one".