1403272155 has 32 divisors (see below), whose sum is σ = 2326176000. Its totient is φ = 721510272.

The previous prime is 1403272139. The next prime is 1403272163. The reversal of 1403272155 is 5512723041.

It is not a de Polignac number, because 1403272155 - 2⁴ = 1403272139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 340296 + ... + 344394.

It is an arithmetic number, because the mean of its divisors is an integer number (72693000).

Almost surely, 2^1403272155 is an apocalyptic number.

1403272155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1403272155 is a deficient number, since it is larger than the sum of its proper divisors (922903845).

1403272155 is a wasteful number, since it uses less digits than its factorization.

1403272155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4923.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 1403272155 is about 37460.2743583119. The cubic root of 1403272155 is about 1119.5598171898.

Adding to 1403272155 its reverse (5512723041), we get a palindrome (6915995196).

The spelling of 1403272155 in words is "one billion, four hundred three million, two hundred seventy-two thousand, one hundred fifty-five".