1551141555 has 16 divisors (see below), whose sum is σ = 2494429344. Its totient is φ = 823074560.

The previous prime is 1551141541. The next prime is 1551141563. The reversal of 1551141555 is 5551411551.

1551141555 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1551141555 - 2⁴ = 1551141539 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259506 + ... + 265415.

It is an arithmetic number, because the mean of its divisors is an integer number (155901834).

Almost surely, 2^1551141555 is an apocalyptic number.

1551141555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1551141555 is a deficient number, since it is larger than the sum of its proper divisors (943287789).

1551141555 is a wasteful number, since it uses less digits than its factorization.

1551141555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525126.

The product of its digits is 12500, while the sum is 33.

The square root of 1551141555 is about 39384.5344646855. The cubic root of 1551141555 is about 1157.5785683723.

The spelling of 1551141555 in words is "one billion, five hundred fifty-one million, one hundred forty-one thousand, five hundred fifty-five".