1655401 has 6 divisors (see below), whose sum is σ = 1819706. Its totient is φ = 1504800.

The previous prime is 1655393. The next prime is 1655419. The reversal of 1655401 is 1045561.

It can be written as a sum of positive squares in only one way, i.e., 1628176 + 27225 = 1276^2 + 165^2 .

It is not a de Polignac number, because 1655401 - 2³ = 1655393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1655461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6720 + ... + 6961.

2^1655401 is an apocalyptic number.

1655401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1655401 is a deficient number, since it is larger than the sum of its proper divisors (164305).

1655401 is a wasteful number, since it uses less digits than its factorization.

1655401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13703 (or 13692 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1655401 is about 1286.6238766633. The cubic root of 1655401 is about 118.2953674849.

The spelling of 1655401 in words is "one million, six hundred fifty-five thousand, four hundred one".