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2972557 = 7715981
BaseRepresentation
bin1011010101101110001101
312121000120201
423111232031
51230110212
6143413501
734160230
oct13255615
95530521
102972557
111750365
12bb4291
13801013
14575417
153dab57
hex2d5b8d

2972557 has 8 divisors (see below), whose sum is σ = 3445632. Its totient is φ = 2511600.

The previous prime is 2972551. The next prime is 2972573. The reversal of 2972557 is 7552792.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2972557 - 23 = 2972549 is a prime.

It is a d-powerful number, because it can be written as 2 + 92 + 76 + 25 + 57 + 59 + 77 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2972551) 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 7 ways as a sum of consecutive naturals, for example, 2494 + ... + 3487.

It is an arithmetic number, because the mean of its divisors is an integer number (430704).

22972557 is an apocalyptic number.

It is an amenable number.

2972557 is a deficient number, since it is larger than the sum of its proper divisors (473075).

2972557 is an equidigital number, since it uses as much as digits as its factorization.

2972557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6059.

The product of its digits is 44100, while the sum is 37.

The square root of 2972557 is about 1724.1104952990. The cubic root of 2972557 is about 143.7838352616.

The spelling of 2972557 in words is "two million, nine hundred seventy-two thousand, five hundred fifty-seven".

Divisors: 1 7 71 497 5981 41867 424651 2972557