1553061 has 8 divisors (see below), whose sum is σ = 2097280. Its totient is φ = 1022112.

The previous prime is 1553053. The next prime is 1553063. The reversal of 1553061 is 1603551.

It is a happy number.

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

It is not a de Polignac number, because 1553061 - 2³ = 1553053 is a prime.

It is a Duffinian number.

1553061 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553063) 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, 3040 + ... + 3513.

It is an arithmetic number, because the mean of its divisors is an integer number (262160).

2^1553061 is an apocalyptic number.

It is an amenable number.

1553061 is a deficient number, since it is larger than the sum of its proper divisors (544219).

1553061 is an equidigital number, since it uses as much as digits as its factorization.

1553061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6635.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1553061 is about 1246.2186806496. The cubic root of 1553061 is about 115.8055849663.

The spelling of 1553061 in words is "one million, five hundred fifty-three thousand, sixty-one".