1142566551 has 24 divisors (see below), whose sum is σ = 1890445440. Its totient is φ = 651405456.

The previous prime is 1142566543. The next prime is 1142566559. The reversal of 1142566551 is 1556652411.

1142566551 is a `hidden beast` number, since 1 + 1 + 42 + 5 + 66 + 551 = 666.

It is an interprime number because it is at equal distance from previous prime (1142566543) and next prime (1142566559).

It is not a de Polignac number, because 1142566551 - 2³ = 1142566543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142566559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7440 + ... + 48378.

It is an arithmetic number, because the mean of its divisors is an integer number (78768560).

Almost surely, 2^1142566551 is an apocalyptic number.

1142566551 is a deficient number, since it is larger than the sum of its proper divisors (747878889).

1142566551 is a wasteful number, since it uses less digits than its factorization.

1142566551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41395 (or 41392 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 1142566551 is about 33801.8720043728. The cubic root of 1142566551 is about 1045.4272959343.

The spelling of 1142566551 in words is "one billion, one hundred forty-two million, five hundred sixty-six thousand, five hundred fifty-one".