1553012101 has 32 divisors (see below), whose sum is σ = 1772928000. Its totient is φ = 1351487232.

The previous prime is 1553012093. The next prime is 1553012143. The reversal of 1553012101 is 1012103551.

It is a cyclic number.

It is not a de Polignac number, because 1553012101 - 2³ = 1553012093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553012161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4325760 + ... + 4326118.

It is an arithmetic number, because the mean of its divisors is an integer number (55404000).

Almost surely, 2^1553012101 is an apocalyptic number.

It is an amenable number.

1553012101 is a deficient number, since it is larger than the sum of its proper divisors (219915899).

1553012101 is a wasteful number, since it uses less digits than its factorization.

1553012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 1553012101 is about 39408.2745245209. The cubic root of 1553012101 is about 1158.0436955223.

Adding to 1553012101 its reverse (1012103551), we get a palindrome (2565115652).

The spelling of 1553012101 in words is "one billion, five hundred fifty-three million, twelve thousand, one hundred one".