1154955 has 16 divisors (see below), whose sum is σ = 1898784. Its totient is φ = 599040.

The previous prime is 1154947. The next prime is 1154969. The reversal of 1154955 is 5594511.

It is not a de Polignac number, because 1154955 - 2³ = 1154947 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, 486 + ... + 1595.

It is an arithmetic number, because the mean of its divisors is an integer number (118674).

2^1154955 is an apocalyptic number.

1154955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1154955 is a deficient number, since it is larger than the sum of its proper divisors (743829).

1154955 is a wasteful number, since it uses less digits than its factorization.

1154955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126.

The product of its digits is 4500, while the sum is 30.

The square root of 1154955 is about 1074.6883269116. The cubic root of 1154955 is about 104.9192122337.

Multiplying 1154955 by its sum of digits (30), we get a triangular number (34648650 = T₈₃₂₄).

The spelling of 1154955 in words is "one million, one hundred fifty-four thousand, nine hundred fifty-five".