1554513242 has 8 divisors (see below), whose sum is σ = 2337765300. Its totient is φ = 775258144.

The previous prime is 1554513241. The next prime is 1554513281. The reversal of 1554513242 is 2423154551.

It can be written as a sum of positive squares in 2 ways, for example, as 1512509881 + 42003361 = 38891^2 + 6481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1554513242² = 4833022839106701128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1554513199 and 1554513208.

It is not an unprimeable number, because it can be changed into a prime (1554513241) 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, 998267 + ... + 999822.

Almost surely, 2^1554513242 is an apocalyptic number.

1554513242 is a deficient number, since it is larger than the sum of its proper divisors (783252058).

1554513242 is a wasteful number, since it uses less digits than its factorization.

1554513242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998480.

The product of its digits is 24000, while the sum is 32.

The square root of 1554513242 is about 39427.3159370505. The cubic root of 1554513242 is about 1158.4166969223.

Adding to 1554513242 its reverse (2423154551), we get a palindrome (3977667793).

The spelling of 1554513242 in words is "one billion, five hundred fifty-four million, five hundred thirteen thousand, two hundred forty-two".