1401577 has 4 divisors (see below), whose sum is σ = 1415556. Its totient is φ = 1387600.

The previous prime is 1401571. The next prime is 1401601. The reversal of 1401577 is 7751041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7751041 = 2713 ⋅2857.

It can be written as a sum of positive squares in 2 ways, for example, as 755161 + 646416 = 869^2 + 804^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401577 - 2¹¹ = 1399529 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401571) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6838 + ... + 7039.

It is an arithmetic number, because the mean of its divisors is an integer number (353889).

2^1401577 is an apocalyptic number.

It is an amenable number.

1401577 is a deficient number, since it is larger than the sum of its proper divisors (13979).

1401577 is a wasteful number, since it uses less digits than its factorization.

1401577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13978.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 1401577 is about 1183.8821731912. The cubic root of 1401577 is about 111.9108825527.

It can be divided in two parts, 140 and 1577, that multiplied together give a triangular number (220780 = T₆₆₄).

The spelling of 1401577 in words is "one million, four hundred one thousand, five hundred seventy-seven".