1400505552 has 100 divisors (see below), whose sum is σ = 4152492036. Its totient is φ = 455431680.

The previous prime is 1400505551. The next prime is 1400505607. The reversal of 1400505552 is 2555050041.

It can be written as a sum of positive squares in 2 ways, for example, as 257795136 + 1142710416 = 16056^2 + 33804^2 .

It is a super-2 number, since 2×1400505552² = 3922831602365649408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400505551) 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 19 ways as a sum of consecutive naturals, for example, 39958 + ... + 66314.

Almost surely, 2^1400505552 is an apocalyptic number.

1400505552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1400505552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2076246018).

1400505552 is an abundant number, since it is smaller than the sum of its proper divisors (2751986484).

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

1400505552 is a wasteful number, since it uses less digits than its factorization.

1400505552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26418 (or 26403 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 1400505552 is about 37423.3289807307. The cubic root of 1400505552 is about 1118.8235819314.

Adding to 1400505552 its reverse (2555050041), we get a palindrome (3955555593).

The spelling of 1400505552 in words is "one billion, four hundred million, five hundred five thousand, five hundred fifty-two".