1011401552 has 60 divisors (see below), whose sum is σ = 2292576480. Its totient is φ = 430976448.

The previous prime is 1011401543. The next prime is 1011401561. The reversal of 1011401552 is 2551041101.

It is an interprime number because it is at equal distance from previous prime (1011401543) and next prime (1011401561).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136733 + ... + 143939.

It is an arithmetic number, because the mean of its divisors is an integer number (38209608).

Almost surely, 2^1011401552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011401552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1146288240).

1011401552 is an abundant number, since it is smaller than the sum of its proper divisors (1281174928).

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

1011401552 is a wasteful number, since it uses less digits than its factorization.

1011401552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7408 (or 7395 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1011401552 is about 31802.5400243440. The cubic root of 1011401552 is about 1003.7861642024.

Adding to 1011401552 its reverse (2551041101), we get a palindrome (3562442653).

The spelling of 1011401552 in words is "one billion, eleven million, four hundred one thousand, five hundred fifty-two".