1551420080 has 40 divisors (see below), whose sum is σ = 4122346272. Its totient is φ = 531915264.

The previous prime is 1551420061. The next prime is 1551420083. The reversal of 1551420080 is 800241551.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1551420083) 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, 1384637 + ... + 1385756.

Almost surely, 2^1551420080 is an apocalyptic number.

1551420080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1551420080 is an abundant number, since it is smaller than the sum of its proper divisors (2570926192).

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

1551420080 is a wasteful number, since it uses less digits than its factorization.

1551420080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770413 (or 2770407 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 1551420080 is about 39388.0702751480. The cubic root of 1551420080 is about 1157.6478496647.

The spelling of 1551420080 in words is "one billion, five hundred fifty-one million, four hundred twenty thousand, eighty".