1254440061 has 16 divisors (see below), whose sum is σ = 2123920000. Its totient is φ = 716822784.

The previous prime is 1254440053. The next prime is 1254440101. The reversal of 1254440061 is 1600444521.

1254440061 is a `hidden beast` number, since 1 + 254 + 4 + 400 + 6 + 1 = 666.

It is not a de Polignac number, because 1254440061 - 2³ = 1254440053 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254440041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3318436 + ... + 3318813.

It is an arithmetic number, because the mean of its divisors is an integer number (132745000).

Almost surely, 2^1254440061 is an apocalyptic number.

It is an amenable number.

1254440061 is a deficient number, since it is larger than the sum of its proper divisors (869479939).

1254440061 is an equidigital number, since it uses as much as digits as its factorization.

1254440061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6637265 (or 6637259 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 1254440061 is about 35418.0753429658. The cubic root of 1254440061 is about 1078.4912807031.

Adding to 1254440061 its reverse (1600444521), we get a palindrome (2854884582).

The spelling of 1254440061 in words is "one billion, two hundred fifty-four million, four hundred forty thousand, sixty-one".