1556423061 has 8 divisors (see below), whose sum is σ = 2076283104. Its totient is φ = 1037089200.

The previous prime is 1556423059. The next prime is 1556423081. The reversal of 1556423061 is 1603246551.

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

It is not a de Polignac number, because 1556423061 - 2¹ = 1556423059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556423051) 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, 124590 + ... + 136511.

It is an arithmetic number, because the mean of its divisors is an integer number (259535388).

Almost surely, 2^1556423061 is an apocalyptic number.

It is an amenable number.

1556423061 is a deficient number, since it is larger than the sum of its proper divisors (519860043).

1556423061 is a wasteful number, since it uses less digits than its factorization.

1556423061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263091.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1556423061 is about 39451.5279932223. The cubic root of 1556423061 is about 1158.8908991280.

The spelling of 1556423061 in words is "one billion, five hundred fifty-six million, four hundred twenty-three thousand, sixty-one".