1505961 has 6 divisors (see below), whose sum is σ = 2175290. Its totient is φ = 1003968.

The previous prime is 1505953. The next prime is 1505983. The reversal of 1505961 is 1695051.

It can be written as a sum of positive squares in only one way, i.e., 1089936 + 416025 = 1044^2 + 645^2 .

It is not a de Polignac number, because 1505961 - 2³ = 1505953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1505261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83656 + ... + 83673.

2^1505961 is an apocalyptic number.

It is an amenable number.

1505961 is a deficient number, since it is larger than the sum of its proper divisors (669329).

1505961 is a wasteful number, since it uses less digits than its factorization.

1505961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167335 (or 167332 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 1505961 is about 1227.1760264933. The cubic root of 1505961 is about 114.6228603098.

The spelling of 1505961 in words is "one million, five hundred five thousand, nine hundred sixty-one".