1553213011 has 8 divisors (see below), whose sum is σ = 1777064960. Its totient is φ = 1329852168.

The previous prime is 1553213009. The next prime is 1553213021. The reversal of 1553213011 is 1103123551.

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

It is a cyclic number.

It is not a de Polignac number, because 1553213011 - 2¹ = 1553213009 is a prime.

It is a super-2 number, since 2×1553213011² = 4824941315079372242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1553213021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115971 + ... + 128668.

It is an arithmetic number, because the mean of its divisors is an integer number (222133120).

Almost surely, 2^1553213011 is an apocalyptic number.

1553213011 is a deficient number, since it is larger than the sum of its proper divisors (223851949).

1553213011 is an equidigital number, since it uses as much as digits as its factorization.

1553213011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245553.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 1553213011 is about 39410.8235260315. The cubic root of 1553213011 is about 1158.0936312840.

Adding to 1553213011 its reverse (1103123551), we get a palindrome (2656336562).

The spelling of 1553213011 in words is "one billion, five hundred fifty-three million, two hundred thirteen thousand, eleven".