1532742557 has 4 divisors (see below), whose sum is σ = 1534244796. Its totient is φ = 1531240320.

The previous prime is 1532742551. The next prime is 1532742581. The reversal of 1532742557 is 7552472351.

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 819905956 + 712836601 = 28634^2 + 26699^2 .

It is a cyclic number.

It is not a de Polignac number, because 1532742557 - 2¹² = 1532738461 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 (1532742551) 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, 749588 + ... + 751629.

It is an arithmetic number, because the mean of its divisors is an integer number (383561199).

Almost surely, 2^1532742557 is an apocalyptic number.

It is an amenable number.

1532742557 is a deficient number, since it is larger than the sum of its proper divisors (1502239).

1532742557 is a wasteful number, since it uses less digits than its factorization.

1532742557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502238.

The product of its digits is 294000, while the sum is 41.

The square root of 1532742557 is about 39150.2561549730. The cubic root of 1532742557 is about 1152.9834460406.

The spelling of 1532742557 in words is "one billion, five hundred thirty-two million, seven hundred forty-two thousand, five hundred fifty-seven".