1557420502 has 16 divisors (see below), whose sum is σ = 2617386192. Its totient is φ = 688785120.

The previous prime is 1557420497. The next prime is 1557420503. The reversal of 1557420502 is 2050247551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557420503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955833 + ... + 957460.

It is an arithmetic number, because the mean of its divisors is an integer number (163586637).

Almost surely, 2^1557420502 is an apocalyptic number.

1557420502 is a deficient number, since it is larger than the sum of its proper divisors (1059965690).

1557420502 is a wasteful number, since it uses less digits than its factorization.

1557420502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913343.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 1557420502 is about 39464.1673166938. The cubic root of 1557420502 is about 1159.1384064815.

The spelling of 1557420502 in words is "one billion, five hundred fifty-seven million, four hundred twenty thousand, five hundred two".