1501213345 has 4 divisors (see below), whose sum is σ = 1801456020. Its totient is φ = 1200970672.

The previous prime is 1501213331. The next prime is 1501213349. The reversal of 1501213345 is 5433121051.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5433121051 = 21023 ⋅258437.

It can be written as a sum of positive squares in 2 ways, for example, as 698227776 + 802985569 = 26424^2 + 28337^2 .

It is a cyclic number.

It is not a de Polignac number, because 1501213345 - 2¹¹ = 1501211297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1501213349) 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, 150121330 + ... + 150121339.

It is an arithmetic number, because the mean of its divisors is an integer number (450364005).

Almost surely, 2^1501213345 is an apocalyptic number.

It is an amenable number.

1501213345 is a deficient number, since it is larger than the sum of its proper divisors (300242675).

1501213345 is an equidigital number, since it uses as much as digits as its factorization.

1501213345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300242674.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1501213345 is about 38745.4945122656. The cubic root of 1501213345 is about 1145.0228112133.

Adding to 1501213345 its reverse (5433121051), we get a palindrome (6934334396).

The spelling of 1501213345 in words is "one billion, five hundred one million, two hundred thirteen thousand, three hundred forty-five".