1552400031 has 48 divisors (see below), whose sum is σ = 2570081280. Its totient is φ = 816117120.

The previous prime is 1552400029. The next prime is 1552400063. The reversal of 1552400031 is 1300042551.

It is not a de Polignac number, because 1552400031 - 2¹ = 1552400029 is a prime.

It is a super-2 number, since 2×1552400031² = 4819891712497601922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1552399980 and 1552400007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552400011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1493610 + ... + 1494648.

It is an arithmetic number, because the mean of its divisors is an integer number (53543360).

Almost surely, 2^1552400031 is an apocalyptic number.

1552400031 is a deficient number, since it is larger than the sum of its proper divisors (1017681249).

1552400031 is a wasteful number, since it uses less digits than its factorization.

1552400031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1552400031 is about 39400.5080043392. The cubic root of 1552400031 is about 1157.8915402489.

Adding to 1552400031 its reverse (1300042551), we get a palindrome (2852442582).

The spelling of 1552400031 in words is "one billion, five hundred fifty-two million, four hundred thousand, thirty-one".