1151955 has 64 divisors (see below), whose sum is σ = 2488320. Its totient is φ = 494208.

The previous prime is 1151933. The next prime is 1151963. The reversal of 1151955 is 5591511.

It is not a de Polignac number, because 1151955 - 2⁹ = 1151443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

1151955 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21709 + ... + 21761.

It is an arithmetic number, because the mean of its divisors is an integer number (38880).

2^1151955 is an apocalyptic number.

1151955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1151955 is an abundant number, since it is smaller than the sum of its proper divisors (1336365).

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

1151955 is a wasteful number, since it uses less digits than its factorization.

1151955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 91 counting only the distinct ones).

The product of its digits is 1125, while the sum is 27.

The square root of 1151955 is about 1073.2916658579. The cubic root of 1151955 is about 104.8282907811.

The spelling of 1151955 in words is "one million, one hundred fifty-one thousand, nine hundred fifty-five".