1622453 has 4 divisors (see below), whose sum is σ = 1854240. Its totient is φ = 1390668.

The previous prime is 1622449. The next prime is 1622471. The reversal of 1622453 is 3542261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3542261 = 71 ⋅49891.

It is a cyclic number.

It is not a de Polignac number, because 1622453 - 2² = 1622449 is a prime.

It is a d-powerful number, because it can be written as 1 + 6³ + 2¹² + 2¹² + 4⁶ + 5⁶ + 3¹³ .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115883 + ... + 115896.

It is an arithmetic number, because the mean of its divisors is an integer number (463560).

2^1622453 is an apocalyptic number.

It is an amenable number.

1622453 is a deficient number, since it is larger than the sum of its proper divisors (231787).

1622453 is an equidigital number, since it uses as much as digits as its factorization.

1622453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231786.

The product of its digits is 1440, while the sum is 23.

The square root of 1622453 is about 1273.7554710383. The cubic root of 1622453 is about 117.5052781694.

It can be divided in two parts, 162 and 2453, that multiplied together give a triangular number (397386 = T₈₉₁).

The spelling of 1622453 in words is "one million, six hundred twenty-two thousand, four hundred fifty-three".