1551161552 has 10 divisors (see below), whose sum is σ = 3005375538. Its totient is φ = 775580768.

The previous prime is 1551161551. The next prime is 1551161567. The reversal of 1551161552 is 2551611551.

It can be written as a sum of positive squares in only one way, i.e., 940280896 + 610880656 = 30664^2 + 24716^2 .

It is a super-2 number, since 2×1551161552² = 4812204320806097408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551161551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48473783 + ... + 48473814.

Almost surely, 2^1551161552 is an apocalyptic number.

It is an amenable number.

1551161552 is a deficient number, since it is larger than the sum of its proper divisors (1454213986).

1551161552 is an equidigital number, since it uses as much as digits as its factorization.

1551161552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96947605 (or 96947599 counting only the distinct ones).

The product of its digits is 7500, while the sum is 32.

The square root of 1551161552 is about 39384.7883325530. The cubic root of 1551161552 is about 1157.5835427731.

The spelling of 1551161552 in words is "one billion, five hundred fifty-one million, one hundred sixty-one thousand, five hundred fifty-two".