1045552131 has 30 divisors (see below), whose sum is σ = 1691282340. Its totient is φ = 643408272.

The previous prime is 1045552129. The next prime is 1045552133. The reversal of 1045552131 is 1312555401.

1045552131 is a `hidden beast` number, since 104 + 5 + 5 + 521 + 31 = 666.

1045552131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1045552129) and next prime (1045552133).

It is not a de Polignac number, because 1045552131 - 2¹ = 1045552129 is a prime.

It is a super-2 number, since 2×1045552131² = 2186358517277282322, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1045552095 and 1045552104.

It is not an unprimeable number, because it can be changed into a prime (1045552133) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 24501 + ... + 51878.

It is an arithmetic number, because the mean of its divisors is an integer number (56376078).

Almost surely, 2^1045552131 is an apocalyptic number.

1045552131 is a deficient number, since it is larger than the sum of its proper divisors (645730209).

1045552131 is an equidigital number, since it uses as much as digits as its factorization.

1045552131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76417 (or 76395 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1045552131 is about 32334.9985464666. The cubic root of 1045552131 is about 1014.9591516155.

The spelling of 1045552131 in words is "one billion, forty-five million, five hundred fifty-two thousand, one hundred thirty-one".