1520229 has 4 divisors (see below), whose sum is σ = 2026976. Its totient is φ = 1013484.

The previous prime is 1520227. The next prime is 1520251. The reversal of 1520229 is 9220251.

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.

It is not a de Polignac number, because 1520229 - 2¹ = 1520227 is a prime.

It is a super-2 number, since 2×1520229² = 4622192424882, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520221) 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, 253369 + ... + 253374.

It is an arithmetic number, because the mean of its divisors is an integer number (506744).

2^1520229 is an apocalyptic number.

It is an amenable number.

1520229 is a deficient number, since it is larger than the sum of its proper divisors (506747).

1520229 is an equidigital number, since it uses as much as digits as its factorization.

1520229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506746.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1520229 is about 1232.9756688597. The cubic root of 1520229 is about 114.9837154005.

The spelling of 1520229 in words is "one million, five hundred twenty thousand, two hundred twenty-nine".