1353971555 has 16 divisors (see below), whose sum is σ = 1657596288. Its totient is φ = 1061424000.

The previous prime is 1353971543. The next prime is 1353971557. The reversal of 1353971555 is 5551793531.

It is not a de Polignac number, because 1353971555 - 2⁴ = 1353971539 is a prime.

It is a super-3 number, since 3×1353971555³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1353971557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74465 + ... + 90845.

It is an arithmetic number, because the mean of its divisors is an integer number (103599768).

Almost surely, 2^1353971555 is an apocalyptic number.

1353971555 is a deficient number, since it is larger than the sum of its proper divisors (303624733).

1353971555 is a wasteful number, since it uses less digits than its factorization.

1353971555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16718.

The product of its digits is 354375, while the sum is 44.

The square root of 1353971555 is about 36796.3524686891. The cubic root of 1353971555 is about 1106.2921910133.

The spelling of 1353971555 in words is "one billion, three hundred fifty-three million, nine hundred seventy-one thousand, five hundred fifty-five".