1555471040 has 28 divisors (see below), whose sum is σ = 3703966176. Its totient is φ = 622188288.

The previous prime is 1555471019. The next prime is 1555471061. The reversal of 1555471040 is 401745551.

It is an interprime number because it is at equal distance from previous prime (1555471019) and next prime (1555471061).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 1555470988 and 1555471006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2430104 + ... + 2430743.

Almost surely, 2^1555471040 is an apocalyptic number.

1555471040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1555471040 is an abundant number, since it is smaller than the sum of its proper divisors (2148495136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1555471040 is an equidigital number, since it uses as much as digits as its factorization.

1555471040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4860864 (or 4860854 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 1555471040 is about 39439.4604425568. The cubic root of 1555471040 is about 1158.6545637495.

The spelling of 1555471040 in words is "one billion, five hundred fifty-five million, four hundred seventy-one thousand, forty".