1545632057 has 4 divisors (see below), whose sum is σ = 1574794980. Its totient is φ = 1516469136.

The previous prime is 1545632029. The next prime is 1545632071. The reversal of 1545632057 is 7502365451.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1058591296 + 487040761 = 32536^2 + 22069^2 .

It is a cyclic number.

It is not a de Polignac number, because 1545632057 - 2¹⁶ = 1545566521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1545632057.

It is not an unprimeable number, because it can be changed into a prime (1545632357) 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, 14581382 + ... + 14581487.

It is an arithmetic number, because the mean of its divisors is an integer number (393698745).

Almost surely, 2^1545632057 is an apocalyptic number.

It is an amenable number.

1545632057 is a deficient number, since it is larger than the sum of its proper divisors (29162923).

1545632057 is an equidigital number, since it uses as much as digits as its factorization.

1545632057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29162922.

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 1545632057 is about 39314.5273022581. The cubic root of 1545632057 is about 1156.2064084778.

The spelling of 1545632057 in words is "one billion, five hundred forty-five million, six hundred thirty-two thousand, fifty-seven".