1556145404 has 48 divisors (see below), whose sum is σ = 3051772416. Its totient is φ = 688195200.

The previous prime is 1556145377. The next prime is 1556145407. The reversal of 1556145404 is 4045416551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556145407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530189 + ... + 533115.

It is an arithmetic number, because the mean of its divisors is an integer number (63578592).

Almost surely, 2^1556145404 is an apocalyptic number.

It is an amenable number.

1556145404 is a deficient number, since it is larger than the sum of its proper divisors (1495627012).

1556145404 is a wasteful number, since it uses less digits than its factorization.

1556145404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266 (or 3264 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 1556145404 is about 39448.0088724387. The cubic root of 1556145404 is about 1158.8219818534.

The spelling of 1556145404 in words is "one billion, five hundred fifty-six million, one hundred forty-five thousand, four hundred four".