1552238537 has 4 divisors (see below), whose sum is σ = 1553777940. Its totient is φ = 1550699136.

The previous prime is 1552238509. The next prime is 1552238539. The reversal of 1552238537 is 7358322551.

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 626801296 + 925437241 = 25036^2 + 30421^2 .

It is a cyclic number.

It is not a de Polignac number, because 1552238537 - 2¹² = 1552234441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1552238494 and 1552238503.

It is not an unprimeable number, because it can be changed into a prime (1552238539) 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, 768188 + ... + 770205.

It is an arithmetic number, because the mean of its divisors is an integer number (388444485).

Almost surely, 2^1552238537 is an apocalyptic number.

It is an amenable number.

1552238537 is a deficient number, since it is larger than the sum of its proper divisors (1539403).

1552238537 is a wasteful number, since it uses less digits than its factorization.

1552238537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539402.

The product of its digits is 252000, while the sum is 41.

The square root of 1552238537 is about 39398.4585612178. The cubic root of 1552238537 is about 1157.8513875783.

The spelling of 1552238537 in words is "one billion, five hundred fifty-two million, two hundred thirty-eight thousand, five hundred thirty-seven".