1552985461 has 8 divisors (see below), whose sum is σ = 1622375424. Its totient is φ = 1483751280.

The previous prime is 1552985449. The next prime is 1552985491. The reversal of 1552985461 is 1645892551.

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

It is a cyclic number.

It is not a de Polignac number, because 1552985461 - 2⁷ = 1552985333 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 (1552985431) 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, 18325 + ... + 58666.

It is an arithmetic number, because the mean of its divisors is an integer number (202796928).

Almost surely, 2^1552985461 is an apocalyptic number.

It is an amenable number.

1552985461 is a deficient number, since it is larger than the sum of its proper divisors (69389963).

1552985461 is an equidigital number, since it uses as much as digits as its factorization.

1552985461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77891.

The product of its digits is 432000, while the sum is 46.

The square root of 1552985461 is about 39407.9365229899. The cubic root of 1552985461 is about 1158.0370738824.

The spelling of 1552985461 in words is "one billion, five hundred fifty-two million, nine hundred eighty-five thousand, four hundred sixty-one".