1545949 has 2 divisors, whose sum is σ = 1545950. Its totient is φ = 1545948.

The previous prime is 1545917. The next prime is 1545959. The reversal of 1545949 is 9495451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1545049 + 900 = 1243^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 1545949 - 2⁵ = 1545917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1545959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772974 + 772975.

It is an arithmetic number, because the mean of its divisors is an integer number (772975).

2^1545949 is an apocalyptic number.

It is an amenable number.

1545949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545949 is an equidigital number, since it uses as much as digits as its factorization.

1545949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 37.

The square root of 1545949 is about 1243.3619746478. The cubic root of 1545949 is about 115.6285432564.

The spelling of 1545949 in words is "one million, five hundred forty-five thousand, nine hundred forty-nine".