556151506 has 4 divisors (see below), whose sum is σ = 834227262. Its totient is φ = 278075752.

The previous prime is 556151467. The next prime is 556151567. The reversal of 556151506 is 605151655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605151655 = 5 ⋅121030331.

It can be written as a sum of positive squares in only one way, i.e., 555780625 + 370881 = 23575^2 + 609^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139037875 + ... + 139037878.

Almost surely, 2^556151506 is an apocalyptic number.

556151506 is a deficient number, since it is larger than the sum of its proper divisors (278075756).

556151506 is a wasteful number, since it uses less digits than its factorization.

556151506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278075755.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 556151506 is about 23582.8646690770. The cubic root of 556151506 is about 822.3645344354.

It can be divided in two parts, 55615 and 1506, that added together give a square (57121 = 239²).

The spelling of 556151506 in words is "five hundred fifty-six million, one hundred fifty-one thousand, five hundred six".