1553211402 has 16 divisors (see below), whose sum is σ = 3157348512. Its totient is φ = 509249520.

The previous prime is 1553211391. The next prime is 1553211421. The reversal of 1553211402 is 2041123551.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2121508 + ... + 2122239.

It is an arithmetic number, because the mean of its divisors is an integer number (197334282).

Almost surely, 2^1553211402 is an apocalyptic number.

1553211402 is an abundant number, since it is smaller than the sum of its proper divisors (1604137110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1553211402 is a wasteful number, since it uses less digits than its factorization.

1553211402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243813.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1553211402 is about 39410.8031128522. The cubic root of 1553211402 is about 1158.0932313875.

Adding to 1553211402 its reverse (2041123551), we get a palindrome (3594334953).

The spelling of 1553211402 in words is "one billion, five hundred fifty-three million, two hundred eleven thousand, four hundred two".