1201577 has 8 divisors (see below), whose sum is σ = 1370376. Its totient is φ = 1043712.

The previous prime is 1201567. The next prime is 1201583. The reversal of 1201577 is 7751021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 163216 + 1038361 = 404^2 + 1019^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201577 - 2⁶ = 1201513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2498 + ... + 2939.

It is an arithmetic number, because the mean of its divisors is an integer number (171297).

2^1201577 is an apocalyptic number.

1201577 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1201577 is a deficient number, since it is larger than the sum of its proper divisors (168799).

1201577 is a wasteful number, since it uses less digits than its factorization.

1201577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5467.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 1201577 is about 1096.1646774094. The cubic root of 1201577 is about 106.3123868905.

Adding to 1201577 its reverse (7751021), we get a palindrome (8952598).

The spelling of 1201577 in words is "one million, two hundred one thousand, five hundred seventy-seven".