1534465021 has 4 divisors (see below), whose sum is σ = 1557367552. Its totient is φ = 1511562492.

The previous prime is 1534465003. The next prime is 1534465069. The reversal of 1534465021 is 1205644351.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 1534465021 - 2⁵ = 1534464989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1534465721) 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, 11451165 + ... + 11451298.

It is an arithmetic number, because the mean of its divisors is an integer number (389341888).

Almost surely, 2^1534465021 is an apocalyptic number.

It is an amenable number.

1534465021 is a deficient number, since it is larger than the sum of its proper divisors (22902531).

1534465021 is an equidigital number, since it uses as much as digits as its factorization.

1534465021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22902530.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1534465021 is about 39172.2480973457. The cubic root of 1534465021 is about 1153.4151839085.

The spelling of 1534465021 in words is "one billion, five hundred thirty-four million, four hundred sixty-five thousand, twenty-one".