1556422461 has 12 divisors (see below), whose sum is σ = 2452544640. Its totient is φ = 943286280.

The previous prime is 1556422451. The next prime is 1556422463. The reversal of 1556422461 is 1642246551.

1556422461 is a `hidden beast` number, since 1 + 5 + 5 + 642 + 2 + 4 + 6 + 1 = 666.

It is not a de Polignac number, because 1556422461 - 2⁷ = 1556422333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556422463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7860621 + ... + 7860818.

It is an arithmetic number, because the mean of its divisors is an integer number (204378720).

Almost surely, 2^1556422461 is an apocalyptic number.

1556422461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1556422461 is a deficient number, since it is larger than the sum of its proper divisors (896122179).

1556422461 is a wasteful number, since it uses less digits than its factorization.

1556422461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15721456 (or 15721453 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 1556422461 is about 39451.5203889533. The cubic root of 1556422461 is about 1158.8907502107.

It can be divided in two parts, 15564 and 22461, that added together give a square (38025 = 195²).

The spelling of 1556422461 in words is "one billion, five hundred fifty-six million, four hundred twenty-two thousand, four hundred sixty-one".